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Can you take Bupropion with T-Diet?

1 drug interaction and 52 additional warnings found for the following 2 drugs:

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Drug interactions

Major drug interactions

Major:

buPROPion phentermine

Applies to: bupropion and T-Diet (phentermine)

BuPROPion may rarely cause seizures, and combining it with other medications that can also cause seizures such as phentermine may increase that risk. You may be more susceptible if you are elderly, undergoing alcohol or drug withdrawal, have a history of seizures, or have a condition affecting the central nervous system such as a brain tumor or head trauma. Talk to your doctor if you have any questions or concerns. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. You should avoid or limit the use of alcohol while being treated with these medications. Also avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medications affect you. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Food/lifestyle interactions

Moderate food/lifestyle interactions

Moderate:

buPROPion Food/Lifestyle

Applies to: bupropion

Using buPROPion with alcohol may increase the risk of uncommon side effects such as seizures, hallucinations, delusions, paranoia, mood and behavioral changes, depression, suicidal thoughts, anxiety, and panic attacks. On the other hand, sudden withdrawal from alcohol following regular or chronic use can also increase your risk of seizures during treatment with buPROPion. If you are prone to frequent or excessive alcohol use, talk to your doctor before starting buPROPion. In general, you should avoid or limit the use of alcohol while being treated with buPROPion. Also avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medication affects you. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Moderate:

phentermine Food/Lifestyle

Applies to: T-Diet (phentermine)

Using phentermine with alcohol can increase the risk of cardiovascular side effects such as increased heart rate, chest pain, or blood pressure changes. In addition, you may also be more likely to experience nervous system side effects such as dizziness, drowsiness, depression, and difficulty concentrating. You should avoid or limit the use of alcohol while being treated with phentermine. Do not use more than the recommended dose of phentermine, and avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medication affects you. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medication without first talking to your doctor.

Moderate:

buPROPion Caffeine

Applies to: bupropion

Both buPROPion and caffeine can increase blood pressure. And using them together may have additive effects. Talk to your doctor if you have any questions or concerns, particularly if you have a history of high blood pressure or heart disease. Your doctor may be able to prescribe alternatives that do not interact, or you may need a dose adjustment or more frequent monitoring to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Moderate:

buPROPion Nicotine

Applies to: bupropion

Using buPROPion and nicotine together can cause an increase in blood pressure. This can cause dizziness, confusion, uneven heartbeats, and chest pain. If you take both medications together, tell your doctor if you have any of these symptoms. You may need a dose adjustment or need your blood pressure checked more often if you take both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Disease interactions

48 potential interactions Applies to: 36 conditions, including High Blood Pressure, Depression, Type 2 Diabetes, Bipolar Disorder, and Anxiety and Stress.

Alcoholism

Major:

bupropion

buPROPion has a major potential interaction with Alcoholism.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Alcoholism.

CNS stimulants (especially amphetamines) have a high potential for abuse and misuse, which can lead to development of a substance use disorder, including addiction. Misuse and abuse of CNS stimulants can result in overdose and death; this risk is increased with higher doses or unapproved methods of administration (e.g., snorting, injection). Before prescribing a CNS stimulant, each patient's risk for abuse, misuse, and addiction should be assessed. Throughout therapy, it is recommended to reassess each patient's risk and frequently monitor for signs/symptoms of abuse, misuse, and addiction. Therapy with CNS stimulants should be administered cautiously, if at all, in patients with a history of alcohol or substance abuse. The use of some agents is contraindicated in patients with a history of drug abuse.

Anorexia Nervosa

Major:

bupropion

buPROPion has a major potential interaction with Anorexia Nervosa.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Anxiety and Stress

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Anxiety and Stress.

Some CNS stimulants are contraindicated in patients with marked agitation and/or anxiety since these symptoms may be aggravated. CNS stimulants may also exacerbate symptoms of behavior disturbance and thought disorder in psychotic patients, particularly children. Therapy with CNS stimulants should be administered cautiously in patients with a history of psychosis or a predisposition to agitated states.

Bipolar Disorder

Major:

bupropion

buPROPion has a major potential interaction with Bipolar Disorder.

Antidepressants increased the risk of suicidal thoughts and behavior in children, adolescents, and young adults in short-term trials; these trials did not show increased risk in patients older than 24 years and risk was reduced in patients 65 years and older. Adult and pediatric patients with major depressive disorder may experience worsening of their depression and/or the emergence of suicidal ideation and behavior (suicidality) or unusual changes in behavior, whether or not they are taking antidepressants; this risk may persist until significant remission occurs. Suicide is a known risk of depression and certain other psychiatric disorders; such disorders are the strongest predictors of suicide. Patients of all ages treated with antidepressants for any indication should be monitored appropriately and observed closely for clinical worsening, suicidality, and unusual changes in behavior, especially during the first few months of drug therapy, and at times of dose changes. Family members/caregivers should be advised to monitor for changes in behavior and to notify the health care provider. Changing the therapeutic regimen (including discontinuing the medication) should be considered in patients whose depression is persistently worse, or who are experiencing emergent suicidal thoughts or behaviors.

Moderate:

bupropion

buPROPion has a moderate potential interaction with Bipolar Disorder.

Bupropion is not approved for the treatment of bipolar depression. Antidepressant therapy can trigger a manic, mixed, or hypomanic episode; the risk appears increased in patients with bipolar disorder or with risk factors for bipolar disorder. Before starting bupropion, patients should be screened for history of bipolar disorder and risk factors for bipolar disorder (e.g., family history of bipolar disorder, suicide, or depression). Depressed patients treated with bupropion have had various neuropsychiatric signs/symptoms, including delusions, hallucinations, psychosis, concentration disturbance, confusion, and paranoia; some of these patients had a diagnosis of bipolar disorder. In some cases, these symptoms abated with dose reduction and/or discontinuation of therapy. Bupropion should be discontinued if such reactions occur.

Brain Tumor

Major:

bupropion

buPROPion has a major potential interaction with Brain Tumor.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Bulimia

Major:

bupropion

buPROPion has a major potential interaction with Bulimia.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Cardiovascular Conditions and Disorders

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Cardiovascular Conditions and Disorders.

Many amphetamines and amphetamine-like drugs are contraindicated in patients with advanced arteriosclerosis, symptomatic or unstable cardiac or cerebrovascular disease, moderate to severe hypertension, or hyperthyroidism. Like other sympathomimetic amines, amphetamines may cause cardiovascular adverse effects such as palpitation, tachycardia, cardiac arrhythmias, and elevation of blood pressure. Rarely, cardiomyopathy manifested as ventricular hypertrophy and/or congestive heart failure has been reported during chronic amphetamine use. In addition, sudden death has been reported in association with amphetamine therapy at usual dosages in children with structural cardiac abnormalities. In general, amphetamines should not be used in patients with structural cardiac abnormalities. If not otherwise contraindicated, therapy with amphetamines should be administered cautiously in patients with a current or past history of cardiovascular or cerebrovascular disease.

Cerebral Vascular Disorder

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Cerebral Vascular Disorder.

Many amphetamines and amphetamine-like drugs are contraindicated in patients with advanced arteriosclerosis, symptomatic or unstable cardiac or cerebrovascular disease, moderate to severe hypertension, or hyperthyroidism. Like other sympathomimetic amines, amphetamines may cause cardiovascular adverse effects such as palpitation, tachycardia, cardiac arrhythmias, and elevation of blood pressure. Rarely, cardiomyopathy manifested as ventricular hypertrophy and/or congestive heart failure has been reported during chronic amphetamine use. In addition, sudden death has been reported in association with amphetamine therapy at usual dosages in children with structural cardiac abnormalities. In general, amphetamines should not be used in patients with structural cardiac abnormalities. If not otherwise contraindicated, therapy with amphetamines should be administered cautiously in patients with a current or past history of cardiovascular or cerebrovascular disease.

CNS Infection

Major:

bupropion

buPROPion has a major potential interaction with CNS Infection.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Depression

Major:

bupropion

buPROPion has a major potential interaction with Depression.

Antidepressants increased the risk of suicidal thoughts and behavior in children, adolescents, and young adults in short-term trials; these trials did not show increased risk in patients older than 24 years and risk was reduced in patients 65 years and older. Adult and pediatric patients with major depressive disorder may experience worsening of their depression and/or the emergence of suicidal ideation and behavior (suicidality) or unusual changes in behavior, whether or not they are taking antidepressants; this risk may persist until significant remission occurs. Suicide is a known risk of depression and certain other psychiatric disorders; such disorders are the strongest predictors of suicide. Patients of all ages treated with antidepressants for any indication should be monitored appropriately and observed closely for clinical worsening, suicidality, and unusual changes in behavior, especially during the first few months of drug therapy, and at times of dose changes. Family members/caregivers should be advised to monitor for changes in behavior and to notify the health care provider. Changing the therapeutic regimen (including discontinuing the medication) should be considered in patients whose depression is persistently worse, or who are experiencing emergent suicidal thoughts or behaviors.

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Depression.

The use of CNS stimulants can cause psychotic symptoms, suicidal ideation, and aggression, and can exacerbate symptoms of behavior disturbance and thought disorder; CNS stimulants may induce a manic or mixed episode in patients with bipolar disorder. Psychiatric symptoms have been reported in patients with and without history of psychiatric disorders. All patients (particularly those with psychotic or bipolar disorders) should be monitored closely, especially during treatment initiation and at times of dose changes. Extreme caution should be exercised when CNS stimulants are given to patients with a history of psychosis, depression, mania, or bipolar disorder. Prior to initiating therapy, all patients should be screened for risk factors for developing a manic episode (e.g., comorbid or history of depressive symptoms or family history of suicide, bipolar disease, or depression). If any psychiatric symptoms emerge or are exacerbated, treatment suspension should be considered. Some CNS stimulants are contraindicated in patients with marked agitation or anxiety.

Diabetes Mellitus

Major:

bupropion

buPROPion has a major potential interaction with Diabetes Mellitus.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Drug Dependence

Major:

bupropion

buPROPion has a major potential interaction with Drug Dependence.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Drug Dependence.

CNS stimulants (especially amphetamines) have a high potential for abuse and misuse, which can lead to development of a substance use disorder, including addiction. Misuse and abuse of CNS stimulants can result in overdose and death; this risk is increased with higher doses or unapproved methods of administration (e.g., snorting, injection). Before prescribing a CNS stimulant, each patient's risk for abuse, misuse, and addiction should be assessed. Throughout therapy, it is recommended to reassess each patient's risk and frequently monitor for signs/symptoms of abuse, misuse, and addiction. Therapy with CNS stimulants should be administered cautiously, if at all, in patients with a history of alcohol or substance abuse. The use of some agents is contraindicated in patients with a history of drug abuse.

Glaucoma, Narrow Angle

Moderate:

bupropion

buPROPion has a moderate potential interaction with Glaucoma, Narrow Angle.

The pupillary dilation that occurs after use of many antidepressant drugs (including bupropion) can induce increased intraocular pressure and result in angle-closure (narrow-angle) glaucoma in a patient with anatomically narrow angles who does not have a patent iridectomy. Patients may want to be examined to determine whether they are susceptible to angle closure, and have a prophylactic procedure (e.g., iridectomy), if they are susceptible. The use of antidepressants (including bupropion-dextromethorphan) should be avoided in patients with untreated anatomically narrow angles.

Glaucoma/Intraocular Hypertension

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Glaucoma/Intraocular Hypertension.

The use of most CNS stimulants is contraindicated in patients with glaucoma, as these agents exhibit sympathomimetic activity and may induce mydriasis provoking an increase in intraocular pressure.

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Glaucoma/Intraocular Hypertension.

Some amphetamines and amphetamine-like drugs are contraindicated in patients with narrow-angle glaucoma or anatomically narrow angles. Like other sympathomimetic amines, amphetamines can induce transient mydriasis. In patients with narrow angles, pupillary dilation can provoke an acute attack of angle-closure glaucoma. If possible, these agents should also be avoided in patients with other forms of glaucoma since mydriasis may occasionally increase intraocular pressure.

Head Injury

Major:

bupropion

buPROPion has a major potential interaction with Head Injury.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Heart Disease

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Heart Disease.

Many CNS stimulants are contraindicated in patients with significant cardiovascular impairment such as uncompensated heart failure, severe coronary disease, severe hypertension (including that associated with hyperthyroidism or pheochromocytoma), cardiac structural abnormalities, serious arrhythmias, etc. Sudden death has been reported in patients with structural cardiac abnormalities or other serious cardiac disease who are treated with CNS stimulants at the recommended dosages for attention deficit hyperactivity disorder; use of these agents should be avoided in patients with known structural cardiac abnormalities, cardiomyopathy, serious cardiac arrhythmia, coronary artery disease, or other serious cardiac disease. Additionally, stroke, myocardial infarction, chest pain, syncope, arrhythmias, and other symptoms have been reported in adults under treatment. A careful assessment of the cardiovascular status should be done in patients being considered for treatment. This includes family history, physical exam, and further cardiac evaluation (EKG and echocardiogram). Patients who develop symptoms should have a detailed cardiac evaluation and if needed, treatment should be suspended.

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Heart Disease.

Many amphetamines and amphetamine-like drugs are contraindicated in patients with advanced arteriosclerosis, symptomatic or unstable cardiac or cerebrovascular disease, moderate to severe hypertension, or hyperthyroidism. Like other sympathomimetic amines, amphetamines may cause cardiovascular adverse effects such as palpitation, tachycardia, cardiac arrhythmias, and elevation of blood pressure. Rarely, cardiomyopathy manifested as ventricular hypertrophy and/or congestive heart failure has been reported during chronic amphetamine use. In addition, sudden death has been reported in association with amphetamine therapy at usual dosages in children with structural cardiac abnormalities. In general, amphetamines should not be used in patients with structural cardiac abnormalities. If not otherwise contraindicated, therapy with amphetamines should be administered cautiously in patients with a current or past history of cardiovascular or cerebrovascular disease.

Hemodialysis

Moderate:

T-Diet

The phentermine in T-Diet has a moderate potential interaction with Hemodialysis.

Phentermine has not been studied in patients with end-stage renal disease on dialysis; therefore, this drug should be avoided in these patients.

High Blood Pressure

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with High Blood Pressure.

Many CNS stimulants are contraindicated in patients with significant cardiovascular impairment such as uncompensated heart failure, severe coronary disease, severe hypertension (including that associated with hyperthyroidism or pheochromocytoma), cardiac structural abnormalities, serious arrhythmias, etc. Sudden death has been reported in patients with structural cardiac abnormalities or other serious cardiac disease who are treated with CNS stimulants at the recommended dosages for attention deficit hyperactivity disorder; use of these agents should be avoided in patients with known structural cardiac abnormalities, cardiomyopathy, serious cardiac arrhythmia, coronary artery disease, or other serious cardiac disease. Additionally, stroke, myocardial infarction, chest pain, syncope, arrhythmias, and other symptoms have been reported in adults under treatment. A careful assessment of the cardiovascular status should be done in patients being considered for treatment. This includes family history, physical exam, and further cardiac evaluation (EKG and echocardiogram). Patients who develop symptoms should have a detailed cardiac evaluation and if needed, treatment should be suspended.

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with High Blood Pressure.

CNS stimulants increase blood pressure and heart rate; the use of some agents may be contraindicated in patients with severe/uncontrolled hypertension. Caution should be used when administering to patients with preexisting high blood pressure (even mild hypertension) and other cardiovascular conditions. All patients under treatment should be regularly monitored for potential tachycardia and hypertension.

History - Cerebrovascular Disease

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with History - Cerebrovascular Disease.

Many amphetamines and amphetamine-like drugs are contraindicated in patients with advanced arteriosclerosis, symptomatic or unstable cardiac or cerebrovascular disease, moderate to severe hypertension, or hyperthyroidism. Like other sympathomimetic amines, amphetamines may cause cardiovascular adverse effects such as palpitation, tachycardia, cardiac arrhythmias, and elevation of blood pressure. Rarely, cardiomyopathy manifested as ventricular hypertrophy and/or congestive heart failure has been reported during chronic amphetamine use. In addition, sudden death has been reported in association with amphetamine therapy at usual dosages in children with structural cardiac abnormalities. In general, amphetamines should not be used in patients with structural cardiac abnormalities. If not otherwise contraindicated, therapy with amphetamines should be administered cautiously in patients with a current or past history of cardiovascular or cerebrovascular disease.

History - Myocardial Infarction

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with History - Myocardial Infarction.

Many amphetamines and amphetamine-like drugs are contraindicated in patients with advanced arteriosclerosis, symptomatic or unstable cardiac or cerebrovascular disease, moderate to severe hypertension, or hyperthyroidism. Like other sympathomimetic amines, amphetamines may cause cardiovascular adverse effects such as palpitation, tachycardia, cardiac arrhythmias, and elevation of blood pressure. Rarely, cardiomyopathy manifested as ventricular hypertrophy and/or congestive heart failure has been reported during chronic amphetamine use. In addition, sudden death has been reported in association with amphetamine therapy at usual dosages in children with structural cardiac abnormalities. In general, amphetamines should not be used in patients with structural cardiac abnormalities. If not otherwise contraindicated, therapy with amphetamines should be administered cautiously in patients with a current or past history of cardiovascular or cerebrovascular disease.

Hyperthyroidism

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Hyperthyroidism.

Many amphetamines and amphetamine-like drugs are contraindicated in patients with advanced arteriosclerosis, symptomatic or unstable cardiac or cerebrovascular disease, moderate to severe hypertension, or hyperthyroidism. Like other sympathomimetic amines, amphetamines may cause cardiovascular adverse effects such as palpitation, tachycardia, cardiac arrhythmias, and elevation of blood pressure. Rarely, cardiomyopathy manifested as ventricular hypertrophy and/or congestive heart failure has been reported during chronic amphetamine use. In addition, sudden death has been reported in association with amphetamine therapy at usual dosages in children with structural cardiac abnormalities. In general, amphetamines should not be used in patients with structural cardiac abnormalities. If not otherwise contraindicated, therapy with amphetamines should be administered cautiously in patients with a current or past history of cardiovascular or cerebrovascular disease.

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Hyperthyroidism.

Many CNS stimulants are contraindicated in patients with significant cardiovascular impairment such as uncompensated heart failure, severe coronary disease, severe hypertension (including that associated with hyperthyroidism or pheochromocytoma), cardiac structural abnormalities, serious arrhythmias, etc. Sudden death has been reported in patients with structural cardiac abnormalities or other serious cardiac disease who are treated with CNS stimulants at the recommended dosages for attention deficit hyperactivity disorder; use of these agents should be avoided in patients with known structural cardiac abnormalities, cardiomyopathy, serious cardiac arrhythmia, coronary artery disease, or other serious cardiac disease. Additionally, stroke, myocardial infarction, chest pain, syncope, arrhythmias, and other symptoms have been reported in adults under treatment. A careful assessment of the cardiovascular status should be done in patients being considered for treatment. This includes family history, physical exam, and further cardiac evaluation (EKG and echocardiogram). Patients who develop symptoms should have a detailed cardiac evaluation and if needed, treatment should be suspended.

Hypoglycemia

Major:

bupropion

buPROPion has a major potential interaction with Hypoglycemia.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Hyponatremia

Major:

bupropion

buPROPion has a major potential interaction with Hyponatremia.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Liver Disease

Major:

bupropion

buPROPion has a major potential interaction with Liver Disease.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Moderate:

bupropion

buPROPion has a moderate potential interaction with Liver Disease.

Bupropion is primarily metabolized by the liver. The systemic exposure and half-life of bupropion and its metabolites may be increased in patients with liver dysfunction. A reduced dose and/or dosing frequency should be considered in patients with mild liver dysfunction (Child-Pugh score: 5 to 6). A dosage reduction is required in patients with moderate to severe liver dysfunction (Child-Pugh score: 7 to 15) who are using a single-ingredient bupropion product; the dosage should not exceed 75 mg/day with immediate-release bupropion hydrochloride (HCl), 100 mg/day or 150 mg every other day with sustained-release bupropion HCl, 150 mg every other day with extended-release bupropion HCl, and 174 mg every other day with extended-release bupropion hydrobromide. Bupropion-dextromethorphan is not recommended for patients with severe liver dysfunction (Child-Pugh C), and no dose adjustment of bupropion-dextromethorphan is recommended in patients with mild or moderate liver dysfunction (Child-Pugh A or B).

Moderate:

T-Diet

The phentermine in T-Diet has a moderate potential interaction with Liver Disease.

Phentermine may be partially metabolized in the liver. After a single dose of phentermine 15 mg-topiramate 92 mg, mean phentermine systemic exposure (AUC) was 37% and 60% higher in patients with mild (Child-Pugh score 5 to 6) and moderate (Child-Pugh score 7 to 9) liver dysfunction, respectively, compared to healthy subjects. No dosage adjustment is necessary in patients with mild liver dysfunction. In patients with moderate liver dysfunction, a reduction in the starting and/or maintenance dosage may be necessary in accordance with the individual manufacturer product information. Phentermine pharmacokinetics have not been studied in patients with severe liver dysfunction (Child-Pugh score 10 to 15); therefore, use should be avoided.

Malnourishment

Minor:

bupropion

buPROPion has a minor potential interaction with Malnourishment.

The use of bupropion is associated with weight alterations. Both weight gain and weight loss may occur, although the latter is much more common. Weight loss greater than 2.27 kg was reported in up to 28% of patients, which may be undesirable in patients suffering from anorexia, malnutrition, or excessive weight loss. Weight change should be monitored during therapy if bupropion is used in these patients.

Mania

Moderate:

bupropion

buPROPion has a moderate potential interaction with Mania.

Bupropion is not approved for the treatment of bipolar depression. Antidepressant therapy can trigger a manic, mixed, or hypomanic episode; the risk appears increased in patients with bipolar disorder or with risk factors for bipolar disorder. Before starting bupropion, patients should be screened for history of bipolar disorder and risk factors for bipolar disorder (e.g., family history of bipolar disorder, suicide, or depression). Depressed patients treated with bupropion have had various neuropsychiatric signs/symptoms, including delusions, hallucinations, psychosis, concentration disturbance, confusion, and paranoia; some of these patients had a diagnosis of bipolar disorder. In some cases, these symptoms abated with dose reduction and/or discontinuation of therapy. Bupropion should be discontinued if such reactions occur.

Neurosis

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Neurosis.

Some CNS stimulants are contraindicated in patients with marked agitation and/or anxiety since these symptoms may be aggravated. CNS stimulants may also exacerbate symptoms of behavior disturbance and thought disorder in psychotic patients, particularly children. Therapy with CNS stimulants should be administered cautiously in patients with a history of psychosis or a predisposition to agitated states.

Peripheral Arterial Disease

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Peripheral Arterial Disease.

Many CNS stimulants are contraindicated in patients with significant cardiovascular impairment such as uncompensated heart failure, severe coronary disease, severe hypertension (including that associated with hyperthyroidism or pheochromocytoma), cardiac structural abnormalities, serious arrhythmias, etc. Sudden death has been reported in patients with structural cardiac abnormalities or other serious cardiac disease who are treated with CNS stimulants at the recommended dosages for attention deficit hyperactivity disorder; use of these agents should be avoided in patients with known structural cardiac abnormalities, cardiomyopathy, serious cardiac arrhythmia, coronary artery disease, or other serious cardiac disease. Additionally, stroke, myocardial infarction, chest pain, syncope, arrhythmias, and other symptoms have been reported in adults under treatment. A careful assessment of the cardiovascular status should be done in patients being considered for treatment. This includes family history, physical exam, and further cardiac evaluation (EKG and echocardiogram). Patients who develop symptoms should have a detailed cardiac evaluation and if needed, treatment should be suspended.

Peritoneal dialysis

Moderate:

T-Diet

The phentermine in T-Diet has a moderate potential interaction with Peritoneal dialysis.

Phentermine has not been studied in patients with end-stage renal disease on dialysis; therefore, this drug should be avoided in these patients.

Pheochromocytoma

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Pheochromocytoma.

Many CNS stimulants are contraindicated in patients with significant cardiovascular impairment such as uncompensated heart failure, severe coronary disease, severe hypertension (including that associated with hyperthyroidism or pheochromocytoma), cardiac structural abnormalities, serious arrhythmias, etc. Sudden death has been reported in patients with structural cardiac abnormalities or other serious cardiac disease who are treated with CNS stimulants at the recommended dosages for attention deficit hyperactivity disorder; use of these agents should be avoided in patients with known structural cardiac abnormalities, cardiomyopathy, serious cardiac arrhythmia, coronary artery disease, or other serious cardiac disease. Additionally, stroke, myocardial infarction, chest pain, syncope, arrhythmias, and other symptoms have been reported in adults under treatment. A careful assessment of the cardiovascular status should be done in patients being considered for treatment. This includes family history, physical exam, and further cardiac evaluation (EKG and echocardiogram). Patients who develop symptoms should have a detailed cardiac evaluation and if needed, treatment should be suspended.

Psychosis

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Psychosis.

The use of CNS stimulants can cause psychotic symptoms, suicidal ideation, and aggression, and can exacerbate symptoms of behavior disturbance and thought disorder; CNS stimulants may induce a manic or mixed episode in patients with bipolar disorder. Psychiatric symptoms have been reported in patients with and without history of psychiatric disorders. All patients (particularly those with psychotic or bipolar disorders) should be monitored closely, especially during treatment initiation and at times of dose changes. Extreme caution should be exercised when CNS stimulants are given to patients with a history of psychosis, depression, mania, or bipolar disorder. Prior to initiating therapy, all patients should be screened for risk factors for developing a manic episode (e.g., comorbid or history of depressive symptoms or family history of suicide, bipolar disease, or depression). If any psychiatric symptoms emerge or are exacerbated, treatment suspension should be considered. Some CNS stimulants are contraindicated in patients with marked agitation or anxiety.

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Psychosis.

Some CNS stimulants are contraindicated in patients with marked agitation and/or anxiety since these symptoms may be aggravated. CNS stimulants may also exacerbate symptoms of behavior disturbance and thought disorder in psychotic patients, particularly children. Therapy with CNS stimulants should be administered cautiously in patients with a history of psychosis or a predisposition to agitated states.

Renal Dysfunction

Moderate:

bupropion

buPROPion has a moderate potential interaction with Renal Dysfunction.

Bupropion and its metabolites, some of which are pharmacologically active with one-fifth to one-half the potency of the parent drug, are cleared renally and may accumulate in patients with renal dysfunction (GFR less than 90 mL/min) to a greater extent than usual. Therefore, bupropion should be used with caution in patients with renal dysfunction. A reduced dose and/or dosing frequency should be considered, and patients should be closely monitored for adverse effects that could indicate high bupropion or metabolite exposures. Bupropion-dextromethorphan is not recommended for patients with severe renal dysfunction (estimated GFR 15 to 29 mL/min/1.73 m2); dosage adjustment of bupropion-dextromethorphan is recommended in patients with moderate renal dysfunction (estimated GFR 30 to 59 mL/min/1.73 m2).

Moderate:

T-Diet

The phentermine in T-Diet has a moderate potential interaction with Renal Dysfunction.

Overall CNS stimulants should be administered with caution in patients with significantly impaired renal function as the reduction in the rate of elimination may alter the therapeutic response. The dosage should be adjusted accordingly in certain agents.

Seizures

Major:

bupropion

buPROPion has a major potential interaction with Seizures.

Bupropion is contraindicated in patients with a seizure disorder. Bupropion can cause seizure; the risk is dose-related. In 1 study, the seizure incidence was about 0.4% with immediate-release bupropion hydrochloride (HCl) in the range of 300 to 450 mg/day (equal to 348 to 522 mg/day of extended-release bupropion hydrobromide [HBr]); the incidence of seizures increases dramatically at higher dosages (almost 10-fold between 450 and 600 mg/day as bupropion HCl [equal to 522 and 696 mg/day as bupropion HBr]). The risk of seizures (related to patient factors, clinical situations, and concomitant medications that lower the seizure threshold) should be considered before starting bupropion. Bupropion is also contraindicated in patients with current/prior diagnosis of bulimia or anorexia nervosa (a higher incidence of seizures was observed in such patients treated with immediate-release bupropion) and in patients undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Bupropion should be administered with caution in patients with conditions that increase the risk of seizure or who have other predisposing conditions including severe head injury; arteriovenous malformation; CNS infection or CNS tumor; severe stroke; metabolic disorders (e.g., hypoglycemia, hyponatremia, severe hepatic impairment, hypoxia); excessive use of alcohol, benzodiazepines, sedative/hypnotics, or opiates; use of illicit drugs (e.g., cocaine); abuse/misuse of prescription drugs (e.g., CNS stimulants); diabetes mellitus treated with oral hypoglycemic agents or insulin; use of anorectic agents; and concomitant use of medications that lower the seizure threshold. The risk of seizure can be reduced if the maximum recommended dosage is not exceeded (e.g., 450 mg/day [as 150 mg 3 times a day] for immediate-release bupropion HCl; 400 mg/day [as 200 mg twice a day] for sustained-release bupropion HCl; 450 mg once a day for extended-release bupropion HCl; 522 mg once a day for extended-release bupropion HBr), and the titration rate is gradual. Bupropion should be discontinued and should not be restarted if the patient has a seizure.

Syncope

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Syncope.

The use of some CNS stimulants has been associated with an increased risk of developing pulmonary hypertension, a rare but fatal disorder. The onset or aggravation of exertional dyspnea, or unexplained symptoms of angina pectoris, syncope, or lower extremity edema suggest the possibility of occurrence of pulmonary hypertension. Under these circumstances, treatment must be immediately discontinued, and the patient should be evaluated to confirm diagnosis. Caution should be exercised in patients with preexisting valvular heart disease or history of pulmonary hypertension. These drugs are not recommended in patients with known heart murmur or valvular heart disease.

Type 2 Diabetes

Moderate:

T-Diet

The phentermine in T-Diet has a moderate potential interaction with Type 2 Diabetes.

Obese, type 2 diabetic patients who achieve weight loss may demonstrate improved metabolic control of their disease as a result of their reduced weight. Therefore, patients with type 2 diabetes mellitus should be monitored during weight-reduction therapy (or therapy that may be expected to induce significant weight loss as a secondary effect) for hypoglycemia and reduced need for oral hypoglycemic medication or insulin, and the dosages of these agents adjusted accordingly. Patients should be apprised of the risk of hypoglycemia and be alert to potential signs and symptoms such as headache, dizziness, drowsiness, nervousness, confusion, tremor, hunger, weakness, perspiration, and palpitation.

Valvular Heart Disease

Major:

T-Diet

The phentermine in T-Diet has a major potential interaction with Valvular Heart Disease.

The use of some CNS stimulants has been associated with an increased risk of developing pulmonary hypertension, a rare but fatal disorder. The onset or aggravation of exertional dyspnea, or unexplained symptoms of angina pectoris, syncope, or lower extremity edema suggest the possibility of occurrence of pulmonary hypertension. Under these circumstances, treatment must be immediately discontinued, and the patient should be evaluated to confirm diagnosis. Caution should be exercised in patients with preexisting valvular heart disease or history of pulmonary hypertension. These drugs are not recommended in patients with known heart murmur or valvular heart disease.

More resources

bupropion

A total of 577 drugs are known to interact with bupropion.

T-Diet

A total of 211 drugs are known to interact with T-Diet.

Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.