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Drug interactions

Carbinoxamine + Tranylcypromine

Severity: Moderate

Carbinoxamine and Tranylcypromine: moderate interaction.

Last updated

For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.

Summary

MAO inhibitors can prolong and intensify the anticholinergic effects of antihistamines such as carbinoxamine, and the two also add to CNS depression. This may cause marked sedation, dry mouth, urinary retention, confusion and tachycardia.

What this interaction means in plain words

Carbinoxamine and Tranylcypromine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Carbinoxamine belongs to Respiratory; Tranylcypromine belongs to Central Nervous System.

Evidence level: Low

Why it happens

MAO inhibition combined with antihistamine anticholinergic and sedative effects produces additive pharmacodynamic toxicity.

What to do

Prefer a non-sedating second-generation antihistamine or a non-drug alternative. If carbinoxamine is used, give the lowest dose and monitor for sedation and anticholinergic effects.

What to ask your pharmacist

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Carbinoxamine with Tranylcypromine?

MediHelp rates the interaction as moderate. Carbinoxamine and Tranylcypromine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. MAO inhibitors can prolong and intensify the anticholinergic effects of antihistamines such as carbinoxamine, and the two also add to CNS depression. This may cause marked sedation, dry mouth, urinary retention, confusion and tachycardia.

How serious is the interaction between Carbinoxamine and Tranylcypromine?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Prefer a non-sedating second-generation antihistamine or a non-drug alternative. If carbinoxamine is used, give the lowest dose and monitor for sedation and anticholinergic effects.

What other medicines interact with Tranylcypromine?

MediHelp also lists interactions of Tranylcypromine with, for example, 5-HTP, Amitriptyline, Amoxapine. The full list is on the Tranylcypromine page.

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