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Drug interactions

Brompheniramine + Trazodone

Severity: Moderate

Brompheniramine and Trazodone: 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

Brompheniramine is a sedating first-generation antihistamine and trazodone is also sedating, so drowsiness and psychomotor impairment may be increased. Anticholinergic effects may add to confusion in older adults.

What this interaction means in plain words

Brompheniramine and Trazodone 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.

Brompheniramine belongs to Respiratory; Trazodone belongs to Central Nervous System.

Evidence level: Moderate

Why it happens

Additive CNS depression via H1 antagonism and trazodone's sedative effects.

What to do

Avoid driving or hazardous tasks and consider a non-sedating antihistamine. Use particular care in older adults.

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 Brompheniramine with Trazodone?

MediHelp rates the interaction as moderate. Brompheniramine and Trazodone 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. Brompheniramine is a sedating first-generation antihistamine and trazodone is also sedating, so drowsiness and psychomotor impairment may be increased. Anticholinergic effects may add to confusion in older adults.

How serious is the interaction between Brompheniramine and Trazodone?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid driving or hazardous tasks and consider a non-sedating antihistamine. Use particular care in older adults.

What other medicines interact with Trazodone?

MediHelp also lists interactions of Trazodone with, for example, Arsenic trioxide, Ibutilide, Isocarboxazid. The full list is on the Trazodone page.

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

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