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Drug interactions

Baclofen + Cyclobenzaprine

Severity: Moderate

Baclofen and Cyclobenzaprine: 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

Both are muscle relaxants that cause drowsiness, and cyclobenzaprine is structurally a tricyclic with anticholinergic effects. Combined use may increase sedation, dizziness and confusion, especially in older adults.

What this interaction means in plain words

Baclofen and Cyclobenzaprine 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; Cyclobenzaprine belongs to Musculoskeletal.

Evidence level: Moderate

Why it happens

Additive CNS depression from two centrally acting muscle relaxants, with anticholinergic effects from cyclobenzaprine.

What to do

Avoid concurrent use of two muscle relaxants where possible, and in older adults prefer a single agent. If combined, use low doses and monitor sedation and falls.

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 Baclofen with Cyclobenzaprine?

MediHelp rates the interaction as moderate. Baclofen and Cyclobenzaprine 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. Both are muscle relaxants that cause drowsiness, and cyclobenzaprine is structurally a tricyclic with anticholinergic effects. Combined use may increase sedation, dizziness and confusion, especially in older adults.

How serious is the interaction between Baclofen and Cyclobenzaprine?

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 concurrent use of two muscle relaxants where possible, and in older adults prefer a single agent. If combined, use low doses and monitor sedation and falls.

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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