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Drug interactions

Carbinoxamine + Modafinil

Severity: Minor

Carbinoxamine and Modafinil: minor 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

Carbinoxamine is a sedating first-generation antihistamine and modafinil is a wakefulness-promoting agent, so effects on alertness may partly offset one another. Modafinil should not be assumed to prevent antihistamine-induced impairment.

What this interaction means in plain words

Carbinoxamine and Modafinil have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

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

Evidence level: Low

Why it happens

Opposing pharmacodynamic effects on CNS arousal; no established pharmacokinetic interaction.

What to do

Monitor for sedation and impaired performance and advise caution with driving. Choose a non-sedating antihistamine if drowsiness is a problem.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

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 Modafinil?

MediHelp rates the interaction as minor. Carbinoxamine and Modafinil have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Carbinoxamine is a sedating first-generation antihistamine and modafinil is a wakefulness-promoting agent, so effects on alertness may partly offset one another. Modafinil should not be assumed to prevent antihistamine-induced impairment.

How serious is the interaction between Carbinoxamine and Modafinil?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for sedation and impaired performance and advise caution with driving. Choose a non-sedating antihistamine if drowsiness is a problem.

What other medicines interact with Modafinil?

MediHelp also lists interactions of Modafinil with, for example, Lenacapavir, Leniolisib, Lorlatinib. The full list is on the Modafinil page.

Full monographs, dosing and an interaction checker in the MediHelp app

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