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Can you take Scot-Tussin Allergy with Tetrabenazine?

1 drug interaction and 28 additional warnings found for the following 2 drugs:

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Drug interactions

Moderate drug interactions

Moderate:

diphenhydrAMINE tetrabenazine

Applies to: Scot-Tussin Allergy (diphenhydramine) and tetrabenazine

Using diphenhydrAMINE together with tetrabenazine may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking, judgment, and motor coordination. 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. 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.

Food/lifestyle interactions

Moderate food/lifestyle interactions

Moderate:

tetrabenazine Food/Lifestyle

Applies to: tetrabenazine

Alcohol can increase the nervous system side effects of tetrabenazine such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with tetrabenazine. Do not use more than the recommended dose of tetrabenazine, and avoid activities requiring mental alertness such as driving or operating hazardous machinery until you know how the medication affects you. Talk to your doctor or pharmacist if you have any questions or concerns.

Moderate:

diphenhydrAMINE Alcohol (Ethanol)

Applies to: Scot-Tussin Allergy (diphenhydramine)

Ask your doctor before using diphenhydrAMINE together with ethanol (alcohol). Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while you are taking diphenhydrAMINE. You should be warned not to exceed recommended dosages and to avoid activities requiring mental alertness. If your doctor prescribes these medications together, you may need a dose adjustment to safely take this combination. 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

26 potential interactions Applies to: 18 conditions, including Depression, Asthma, Osteoporosis, COPD, and Arrhythmia.

Arrhythmia

Major:

tetrabenazine

Tetrabenazine has a major potential interaction with Arrhythmia.

Tetrabenazine can cause an increase in the corrected QT interval. QT prolongation can lead to the development of ventricular arrhythmias. The use of tetrabenazine should be avoided in patients with congenital long QT syndrome and in patients with a history of arrhythmias.

Asthma

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Asthma.

Oral anxiolytic, sedative, and hypnotic agents may cause respiratory depression and apnea when given in high dosages or following acute overdose. However, some patients may be susceptible at commonly used dosages, including the elderly, debilitated or severely ill patients, those receiving other CNS depressants, and those with limited ventilatory reserve, chronic pulmonary insufficiency or other respiratory disorders. Therapy with anxiolytic, sedative, and hypnotic agents should be administered cautiously in these patients. Appropriate monitoring and individualization of dosage are recommended.

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Asthma.

It has been suggested that the anticholinergic effect of antihistamines may reduce the volume and cause thickening of bronchial secretions, resulting in obstruction of respiratory tract. Some manufacturers and clinicians recommend that therapy with antihistamines be administered cautiously in patients with asthma or chronic obstructive pulmonary disease.

Breast Cancer

Moderate:

tetrabenazine

Tetrabenazine has a moderate potential interaction with Breast Cancer.

Tetrabenazine can elevate serum prolactin concentrations. This should be considered when therapy will be prescribed in patients with previously detected breast cancer. Additionally, chronic increase in serum prolactin has been associated with low levels of estrogen and increase risk of osteoporosis. If there is suspicion of hyperprolactinemia, appropriate laboratory testing is advised and treatment discontinuation should be considered.

Cardiovascular Conditions and Disorders

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Cardiovascular Conditions and Disorders.

Antihistamines may infrequently cause cardiovascular adverse effects related to their anticholinergic and local anesthetic (quinidine-like) activities. Tachycardia, palpitation, ECG changes, arrhythmias, hypotension, and hypertension have been reported. Although these effects are uncommon and usually limited to overdosage situations, the manufacturers and some clinicians recommend that therapy with antihistamines be administered cautiously in patients with cardiovascular disease, hypertension, and/or hyperthyroidism.

COPD

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with COPD.

It has been suggested that the anticholinergic effect of antihistamines may reduce the volume and cause thickening of bronchial secretions, resulting in obstruction of respiratory tract. Some manufacturers and clinicians recommend that therapy with antihistamines be administered cautiously in patients with asthma or chronic obstructive pulmonary disease.

Depression

Major:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a major potential interaction with Depression.

A variety of abnormal thinking and behavior changes have been reported to occur in association with the use of most anxiolytics, sedatives and hypnotics. Some of these changes include decreased inhibition, aggressiveness, agitation, and hallucinations. These drugs can cause or exacerbate mental depression and cause suicidal behavior and ideation. Therapy with these drugs should be administered cautiously in patients with a history of depression or other psychiatric disorders. Patients should be monitored for any changes in mood or behavior. It may be prudent to refrain from dispensing large quantities of medication to these patients.

Major:

tetrabenazine

Tetrabenazine has a major potential interaction with Depression.

The use of tetrabenazine is contraindicated in patients with untreated or uncontrolled depression. Tetrabenazine can increase the risk of depression and suicidal thoughts and behavior.

Dysphagia

Moderate:

tetrabenazine

Tetrabenazine has a moderate potential interaction with Dysphagia.

Tetrabenazine reduces dopaminergic transmission and can be associated with esophageal dysmotility and dysphagia. Caution should be exercised when used in patients with conditions that predispose to dysphagia. Special caution is advised in patients with Huntington's disease as dysphagia is a common symptom and it could lead to aspiration pneumonia.

Gastrointestinal Obstruction

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Gastrointestinal Obstruction.

Antihistamines often have anticholinergic activity, to which elderly patients are particularly sensitive. Therapy with antihistamines should be administered cautiously, if at all, in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. Conventional, first-generation antihistamines such as the ethanolamines (bromodiphenhydramine, carbinoxamine, clemastine, dimenhydrinate, diphenhydramine, doxylamine, phenyltoloxamine) tend to exhibit substantial anticholinergic effects. In contrast, the newer, relatively nonsedating antihistamines (e.g., cetirizine, fexofenadine, loratadine) reportedly have low to minimal anticholinergic activity at normally recommended dosages and may be appropriate alternatives.

Glaucoma/Intraocular Hypertension

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Glaucoma/Intraocular Hypertension.

Some hypnotic drugs can have an anticholinergic effect and should be used with caution in patients with glaucoma, and trouble urinating due to retention or enlarged prostate.

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Glaucoma/Intraocular Hypertension.

Antihistamines often have anticholinergic activity, to which elderly patients are particularly sensitive. Therapy with antihistamines should be administered cautiously, if at all, in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. Conventional, first-generation antihistamines such as the ethanolamines (bromodiphenhydramine, carbinoxamine, clemastine, dimenhydrinate, diphenhydramine, doxylamine, phenyltoloxamine) tend to exhibit substantial anticholinergic effects. In contrast, the newer, relatively nonsedating antihistamines (e.g., cetirizine, fexofenadine, loratadine) reportedly have low to minimal anticholinergic activity at normally recommended dosages and may be appropriate alternatives.

Huntington's Disease

Major:

tetrabenazine

Tetrabenazine has a major potential interaction with Huntington's Disease.

Patients with Huntington disease are prone to depression. Tetrabenazine can increase the risk of depression and suicidal thoughts and should be used with caution in patients with Huntington's disease. The benefits and risks of treatment should be considered before starting therapy, and patients should be under close observation for emergence or worsening of depression symptoms. The family and caregivers should also be informed of this risk and should be instructed to report any changes in behavior or any concerns to the treating physician.

Moderate:

tetrabenazine

Tetrabenazine has a moderate potential interaction with Huntington's Disease.

Tetrabenazine reduces dopaminergic transmission and can be associated with esophageal dysmotility and dysphagia. Caution should be exercised when used in patients with conditions that predispose to dysphagia. Special caution is advised in patients with Huntington's disease as dysphagia is a common symptom and it could lead to aspiration pneumonia.

Hyperprolactinemia

Moderate:

tetrabenazine

Tetrabenazine has a moderate potential interaction with Hyperprolactinemia.

Tetrabenazine can elevate serum prolactin concentrations. This should be considered when therapy will be prescribed in patients with previously detected breast cancer. Additionally, chronic increase in serum prolactin has been associated with low levels of estrogen and increase risk of osteoporosis. If there is suspicion of hyperprolactinemia, appropriate laboratory testing is advised and treatment discontinuation should be considered.

Hyperthyroidism

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Hyperthyroidism.

Antihistamines may infrequently cause cardiovascular adverse effects related to their anticholinergic and local anesthetic (quinidine-like) activities. Tachycardia, palpitation, ECG changes, arrhythmias, hypotension, and hypertension have been reported. Although these effects are uncommon and usually limited to overdosage situations, the manufacturers and some clinicians recommend that therapy with antihistamines be administered cautiously in patients with cardiovascular disease, hypertension, and/or hyperthyroidism.

Hypotension

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Hypotension.

Antihistamines may infrequently cause cardiovascular adverse effects related to their anticholinergic and local anesthetic (quinidine-like) activities. Tachycardia, palpitation, ECG changes, arrhythmias, hypotension, and hypertension have been reported. Although these effects are uncommon and usually limited to overdosage situations, the manufacturers and some clinicians recommend that therapy with antihistamines be administered cautiously in patients with cardiovascular disease, hypertension, and/or hyperthyroidism.

Moderate:

tetrabenazine

Tetrabenazine has a moderate potential interaction with Hypotension.

Tetrabenazine can induce postural dizziness and syncope and should be used with caution in patients who are vulnerable to hypotension.

Liver Disease

Major:

tetrabenazine

Tetrabenazine has a major potential interaction with Liver Disease.

The use of tetrabenazine is contraindicated in patients with hepatic impairment. The safety and efficacy of exposure to the drug and other metabolites are unknown and it is not possible to adjust the dosage in hepatic impairment to ensure safe use.

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Liver Disease.

In general, anxiolytics, sedatives and hypnotics are extensively metabolized by the liver. Their plasma clearance may be decreased and their half-life prolonged in patients with impaired hepatic function. Therapy with these drugs should be administered cautiously in patients with liver disease (some are not recommended in severe liver impairment), and the dosage should be adjusted accordingly. Laboratory testing is recommended prior and during treatment.

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Liver Disease.

Limited pharmacokinetic data are available for the older, first-generation antihistamines. Many appear to be primarily metabolized by the liver, and both parent drugs and metabolites are excreted in the urine. Patients with renal and/or liver disease may be at greater risk for adverse effects from antihistamines due to drug and metabolite accumulation. Therapy with antihistamines should be administered cautiously in such patients. Lower initial dosages may be appropriate.

Osteoporosis

Moderate:

tetrabenazine

Tetrabenazine has a moderate potential interaction with Osteoporosis.

Tetrabenazine can elevate serum prolactin concentrations. This should be considered when therapy will be prescribed in patients with previously detected breast cancer. Additionally, chronic increase in serum prolactin has been associated with low levels of estrogen and increase risk of osteoporosis. If there is suspicion of hyperprolactinemia, appropriate laboratory testing is advised and treatment discontinuation should be considered.

Renal Dysfunction

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Renal Dysfunction.

Limited pharmacokinetic data are available for the older, first-generation antihistamines. Many appear to be primarily metabolized by the liver, and both parent drugs and metabolites are excreted in the urine. Patients with renal and/or liver disease may be at greater risk for adverse effects from antihistamines due to drug and metabolite accumulation. Therapy with antihistamines should be administered cautiously in such patients. Lower initial dosages may be appropriate.

Syncope

Moderate:

tetrabenazine

Tetrabenazine has a moderate potential interaction with Syncope.

Tetrabenazine can induce postural dizziness and syncope and should be used with caution in patients who are vulnerable to hypotension.

Urinary Retention

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Urinary Retention.

Some hypnotic drugs can have an anticholinergic effect and should be used with caution in patients with glaucoma, and trouble urinating due to retention or enlarged prostate.

Moderate:

Scot-Tussin Allergy

The diphenhydrAMINE in Scot-Tussin Allergy has a moderate potential interaction with Urinary Retention.

Antihistamines often have anticholinergic activity, to which elderly patients are particularly sensitive. Therapy with antihistamines should be administered cautiously, if at all, in patients with preexisting conditions that are likely to be exacerbated by anticholinergic activity, such as urinary retention or obstruction; angle-closure glaucoma, untreated intraocular hypertension, or uncontrolled primary open-angle glaucoma; and gastrointestinal obstructive disorders. Conventional, first-generation antihistamines such as the ethanolamines (bromodiphenhydramine, carbinoxamine, clemastine, dimenhydrinate, diphenhydramine, doxylamine, phenyltoloxamine) tend to exhibit substantial anticholinergic effects. In contrast, the newer, relatively nonsedating antihistamines (e.g., cetirizine, fexofenadine, loratadine) reportedly have low to minimal anticholinergic activity at normally recommended dosages and may be appropriate alternatives.

More resources

Scot-Tussin Allergy

A total of 493 drugs are known to interact with Scot-Tussin Allergy.

tetrabenazine

A total of 567 drugs are known to interact with tetrabenazine.

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.