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Drug Interactions between carvedilol and doxepin topical

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

doxepin topical carvedilol

Applies to: doxepin topical and carvedilol

MONITOR: Limited data suggest that labetalol can increase the plasma concentrations of tricyclic antidepressants. The proposed mechanism is competition for the same metabolic pathway. In a study (n=13), imipramine AUC increased by 53% in subjects taking labetalol compared to placebo. The manufacturers of labetalol indicate that concomitant use with tricyclic antidepressants may increase the incidence of tremors and hypotensive events. Carvedilol may also interact similarly.

MANAGEMENT: Close monitoring for clinical response and tolerance is recommended whenever labetalol is added to or discontinued from an antidepressant regimen. Patients should be advised to notify their physician if they experience excessive antidepressant effects such as tremor, dry mouth, blurry vision, irregular or fast heartbeat, constipation, urinary retention, dizziness, or hypotension. Dose adjustments may be necessary.

References (6)
  1. Hermann DJ, Krol TF, Dukes GE, et al. (1992) "Comparison of verapamil, diltiazem, and labetalol on the bioavailability and metabolism of imipramine." J Clin Pharmacol, 32, p. 176-83
  2. (2002) "Product Information. Trandate (labetalol)." Glaxo Wellcome
  3. Cerner Multum, Inc. "UK Summary of Product Characteristics."
  4. Cerner Multum, Inc. "Australian Product Information."
  5. Agencia Española de Medicamentos y Productos Sanitarios Healthcare (2008) Centro de información online de medicamentos de la AEMPS - CIMA. https://cima.aemps.es/cima/publico/home.html
  6. (2016) "Product Information. Labetalol Hydrochloride (labetalol)." Watson Pharmaceuticals

Drug and food interactions

No alcohol/food interactions were found. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

See also

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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.

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