Drug interactions
Baclofen + Chlorpheniramine
Severity: Moderate
Baclofen and Chlorpheniramine: 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
Chlorpheniramine is a sedating antihistamine that can cause drowsiness and impaired alertness. With baclofen, these effects may add together.
What this interaction means in plain words
Baclofen and Chlorpheniramine 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.
Baclofen belongs to Musculoskeletal; Chlorpheniramine belongs to Respiratory.
Why it happens
Additive CNS depression from H1-receptor blockade and baclofen's GABA-B agonism.
What to do
Advise avoiding driving and hazardous activities until the response is known. Consider a non-sedating antihistamine as an alternative.
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?
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Other interactions of Baclofen
Other interactions of Chlorpheniramine
Frequently asked questions
Can I take Baclofen with Chlorpheniramine?
MediHelp rates the interaction as moderate. Baclofen and Chlorpheniramine 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. Chlorpheniramine is a sedating antihistamine that can cause drowsiness and impaired alertness. With baclofen, these effects may add together.
How serious is the interaction between Baclofen and Chlorpheniramine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Advise avoiding driving and hazardous activities until the response is known. Consider a non-sedating antihistamine as an alternative.
What other medicines interact with Baclofen?
MediHelp also lists interactions of Baclofen with, for example, Alfentanil, Amobarbital, Belladonna and opium. The full list is on the Baclofen page.
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