Can you take Medex-LA with Selegiline?
1 drug interaction and 24 additional warnings found for the following 2 drugs:
- Medex-LA (guaifenesin/phenylpropanolamine)
- selegiline
Drug interactions
Major drug interactions
Major:
phenylpropanolamine selegiline
Applies to: Medex-LA (guaifenesin / phenylpropanolamine) and selegiline
Using selegiline together with phenylpropanolamine is not recommended. Combining these medications can cause dangerously high blood pressure and even death. You may use phenylpropanolamine only after you have been off selegiline for at least 14 days. You should seek immediate medical attention if you experience sudden and severe headache, blurred vision, confusion, seizures, chest pain, nausea or vomiting, sudden numbness or weakness (especially on one side of the body), speech difficulties, fever, sweating, lightheadedness, and/or fainting during treatment with selegiline, as these may be signs and symptoms of excessively high blood pressure. 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
Major food/lifestyle interactions
Major:
selegiline Food/Lifestyle
Applies to: selegiline
While you are taking selegiline, you must not eat or drink certain foods and beverages that are high in tyramine. Eating these foods while you are taking selegiline can raise your blood pressure to dangerous levels. This may cause life threatening symptoms such as sudden and severe headache, confusion, blurred vision, problems with speech or balance, nausea, vomiting, chest pain, seizure (convulsions), and sudden numbness or weakness (especially on one side of the body). Call your doctor at once if you have any of these symptoms. Foods that are high in tyramine include: air dried meats, aged or fermented meats, sausage or salami, pickled herring, and any spoiled or improperly stored beef, poultry, fish, or liver, red wine, beer from a tap, beer that has not been pasteurize, aged cheeses, including blue, brick, brie, cheddar, parmesan, romano, and swiss, sauerkraut, over the counter supplements or cough and cold medicines that contain tyramine, soy beans, soy sauce, tofu, miso soup, bean curd, fava beans, or yeast extracts (such as Marmite).
Moderate food/lifestyle interactions
Moderate:
phenylpropanolamine Food/Lifestyle
Applies to: Medex-LA (guaifenesin / phenylpropanolamine)
Using phenylpropanolamine 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 phenylpropanolamine. Do not use more than the recommended dose of phenylpropanolamine, 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:
selegiline Alcohol (Ethanol)
Applies to: selegiline
Using selegiline together with ethanol (alcohol) may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people may also experience impairment in thinking, judgment, and motor coordination. You should avoid or limit the use of alcohol while being treated with selegiline. Do not use more than the recommended dose of selegiline, and avoid driving, operating machinery, or engaging in potentially hazardous activities requiring mental alertness and motor coordination until you know how the medication affects you. Talk to your doctor if you have any questions or concerns. 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:
phenylpropanolamine Caffeine
Applies to: Medex-LA (guaifenesin / phenylpropanolamine)
Both phenylpropanolamine and caffeine can increase blood pressure and heart rate, and combining them may enhance these effects. Talk to your doctor before using these medications, especially if you have a history of high blood pressure or heart disease. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. Contact your doctor if your condition changes or you experience increased side effects. 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
20 potential interactions Applies to: 16 conditions, including High Blood Pressure, Benign Prostatic Hyperplasia, Hypotension, Hyperthyroidism, and Psychosis.
Benign Prostatic Hyperplasia
Moderate:
Medex-LA
The phenylpropanolamine in Medex-LA has a moderate potential interaction with Benign Prostatic Hyperplasia.
Sympathomimetic agents may cause or worsen urinary difficulty in patients with prostate enlargement due to smooth muscle contraction in the bladder neck via stimulation of alpha-1 adrenergic receptors. Therapy with sympathomimetic agents should be administered cautiously in patients with hypertrophy or neoplasm of the prostate.
Cardiovascular Conditions and Disorders
Major:
Medex-LA
The phenylpropanolamine in Medex-LA has a major potential interaction with Cardiovascular Conditions and Disorders.
Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.
Moderate:
selegiline
Selegiline has a moderate potential interaction with Cardiovascular Conditions and Disorders.
The use of selegiline has been associated with cardiovascular events such as tachycardia, bradycardia, syncope, hypertension, hypotension, arrhythmias, and aggravation of angina pectoris. Therapy with selegiline should be administered cautiously in patients with cardiac disease.
Cerebrovascular Insufficiency
Major:
Medex-LA
The phenylpropanolamine in Medex-LA has a major potential interaction with Cerebrovascular Insufficiency.
Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.
Diabetes Mellitus
Moderate:
Medex-LA
The phenylpropanolamine in Medex-LA has a moderate potential interaction with Diabetes Mellitus.
Sympathomimetic agents may cause increases in blood glucose concentrations. These effects are usually transient and slight but may be significant with dosages higher than those normally recommended. Therapy with sympathomimetic agents should be administered cautiously in patients with diabetes mellitus. Closer monitoring of blood glucose concentrations may be appropriate.
Glaucoma/Intraocular Hypertension
Moderate:
Medex-LA
The phenylpropanolamine in Medex-LA has a moderate potential interaction with Glaucoma/Intraocular Hypertension.
Sympathomimetic agents can induce transient mydriasis via stimulation of alpha-1 adrenergic receptors. In patients with anatomically narrow angles or narrow-angle glaucoma, pupillary dilation can provoke an acute attack. In patients with other forms of glaucoma, mydriasis may occasionally increase intraocular pressure. Therapy with sympathomimetic agents should be administered cautiously in patients with or predisposed to glaucoma, particularly narrow-angle glaucoma.
Moderate:
selegiline
Selegiline has a moderate potential interaction with Glaucoma/Intraocular Hypertension.
The use of selegiline may exacerbate glaucoma. Therapy with selegiline should be administered cautiously in patients with glaucoma.
High Blood Pressure
Moderate:
selegiline
Selegiline has a moderate potential interaction with High Blood Pressure.
Selegiline can cause hypertensive reactions and it should be used with caution in patients with hypertension. Patients should report any symptoms such as occipital headache, palpitations, neck stiffness or soreness, nausea, sweating, dilated pupils and photophobia. Patients receiving therapy need to have monitored their blood pressure frequently to detect any evidence of pressor response. Additionally, patients should be advised to avoid foods and drinks with high tyramine content such as cheese, sour cream, beer, liver, bananas and others, as these might trigger a hypertensive crisis.
Hyperthyroidism
Major:
Medex-LA
The phenylpropanolamine in Medex-LA has a major potential interaction with Hyperthyroidism.
Sympathomimetic agents may cause adverse cardiovascular effects, particularly when used in high dosages and/or in susceptible patients. In cardiac tissues, these agents may produce positive chronotropic and inotropic effects via stimulation of beta- 1 adrenergic receptors. Cardiac output, oxygen consumption, and the work of the heart may be increased. In the peripheral vasculature, vasoconstriction may occur via stimulation of alpha-1 adrenergic receptors. Palpitations, tachycardia, arrhythmia, hypertension, reflex bradycardia, coronary occlusion, cerebral vasculitis, myocardial infarction, cardiac arrest, and death have been reported. Some of these agents, particularly ephedra alkaloids (ephedrine, ma huang, phenylpropanolamine), may also predispose patients to hemorrhagic and ischemic stroke. Therapy with sympathomimetic agents should generally be avoided or administered cautiously in patients with sensitivity to sympathomimetic amines, hyperthyroidism, or underlying cardiovascular or cerebrovascular disorders. These agents should not be used in patients with severe coronary artery disease or severe/uncontrolled hypertension.
Hypotension
Moderate:
selegiline
Selegiline has a moderate potential interaction with Hypotension.
Dopamine agonists may impair the systemic regulation of blood pressure, with resultant orthostatic hypotension at any time, but especially during dose escalation. Additionally, patients with Parkinson's disease may have an impaired capacity to respond to an orthostatic challenge. For these reasons, patients with Parkinson's disease (or restless legs syndrome) who are being treated with dopaminergic agonists typically require careful monitoring for signs/symptoms of orthostatic hypotension, especially during dose escalation, and should be advised of this risk.
Moderate:
selegiline
Selegiline has a moderate potential interaction with Hypotension.
Hypotension has been observed during therapy with monoamine oxidase inhibitors. These drugs should be used with caution, especially in patients with tendency towards hypotension or taking other drugs known to cause hypotension.
Liver Disease
Moderate:
selegiline
Selegiline has a moderate potential interaction with Liver Disease.
Patients with mild to moderate hepatic impairment (Child-Pugh 5 to 9), may require a dose reduction of selegiline depending on their clinical response. Selegiline is not recommended in patients with severe hepatic impairment (Child-Pugh >9).
Prostate Tumor, Benign
Moderate:
Medex-LA
The phenylpropanolamine in Medex-LA has a moderate potential interaction with Prostate Tumor, Benign.
Sympathomimetic agents may cause or worsen urinary difficulty in patients with prostate enlargement due to smooth muscle contraction in the bladder neck via stimulation of alpha-1 adrenergic receptors. Therapy with sympathomimetic agents should be administered cautiously in patients with hypertrophy or neoplasm of the prostate.
Psychiatric Disorders
Moderate:
Medex-LA
The phenylpropanolamine in Medex-LA has a moderate potential interaction with Psychiatric Disorders.
Phenylpropanolamine may precipitate or exacerbate psychotic symptoms, particularly at high dosages. Therapy with phenylpropanolamine should be administered cautiously in patients with a history of psychiatric disorders.
Psychosis
Major:
selegiline
Selegiline has a major potential interaction with Psychosis.
Patients with major psychotic disorders should ordinarily not be treated with selegiline because of the risk of exacerbating psychosis.
Moderate:
Medex-LA
The phenylpropanolamine in Medex-LA has a moderate potential interaction with Psychosis.
Phenylpropanolamine may precipitate or exacerbate psychotic symptoms, particularly at high dosages. Therapy with phenylpropanolamine should be administered cautiously in patients with a history of psychiatric disorders.
Renal Dysfunction
Major:
selegiline
Selegiline has a major potential interaction with Renal Dysfunction.
Small increments in serum BUN and creatinine have been observed in patients treated with high dose of selegiline. Treatment with selegiline is not recommended in patients with severe renal impairment and end-stage renal disease (CrCl <30 mL/min).
Skin Cancer
Moderate:
selegiline
Selegiline has a moderate potential interaction with Skin Cancer.
Patients with Parkinson's disease have a higher risk of developing melanoma than the general population. Patients and providers should be advised to monitor for melanoma frequently and regularly when using selegiline. Skin examinations should be performed by qualified individuals (e.g., dermatologists).
Sleep Disorders
Moderate:
selegiline
Selegiline has a moderate potential interaction with Sleep Disorders.
Selegiline should be used with caution in patients with sleep disorders as it can cause somnolence. Patients should exercise caution when driving, operating machines, or working at heights during treatment. Treatment should be discontinued if patients develop daytime sleepiness with episodes of falling asleep during activities such as conversation, eating, etc. If not discontinued, patients should be very cautious about the activities that they engage in that could be potentially dangerous. Prescribers should question the patients specifically about somnolence, as it is rarely reported by patients, and ask about sleep disorders and the use of concomitant sedating medications.
Urinary Retention
Moderate:
selegiline
Selegiline has a moderate potential interaction with Urinary Retention.
The use of selegiline may exacerbate urinary retention. Therapy with selegiline should be administered cautiously in patients with urinary retention or obstruction.
More resources
Medex-LA
A total of 207 drugs are known to interact with Medex-LA.
- Medex-la is in the drug class upper respiratory combinations.
- Medex-la is used to treat the following conditions:
selegiline
A total of 537 drugs are known to interact with selegiline.
- Selegiline is in the following drug classes: dopaminergic antiparkinsonism agents, monoamine oxidase inhibitors.
-
Selegiline is used to treat the following conditions:
- ADHD (off-label)
- Depression
- Major Depressive Disorder
- Parkinson's Disease
Drug Interaction Classification
| Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
| Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
| 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. | |
| No interaction information available. |
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.