Drug interactions
Cyclobenzaprine + Glycopyrrolate
Severity: Moderate
Cyclobenzaprine and Glycopyrrolate: 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 drugs have antimuscarinic activity, so combining them increases anticholinergic effects such as dry mouth, constipation, urinary retention, blurred vision and tachycardia. Older adults and patients with glaucoma, prostatic hypertrophy or ileus are at greatest risk.
What this interaction means in plain words
Cyclobenzaprine and Glycopyrrolate 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.
Cyclobenzaprine belongs to Musculoskeletal; Glycopyrrolate belongs to Respiratory.
Why it happens
Additive blockade of muscarinic receptors by cyclobenzaprine and glycopyrrolate.
What to do
Monitor for anticholinergic adverse effects such as urinary retention, constipation and confusion, and reduce the dose or choose an alternative if they emerge. Avoid in patients with narrow-angle glaucoma or obstructive uropathy.
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 Cyclobenzaprine
- Cyclobenzaprine + Isocarboxazid Contraindicated
- Cyclobenzaprine + Linezolid Contraindicated
- Cyclobenzaprine + Phenelzine Contraindicated
- Cyclobenzaprine + Safinamide Contraindicated
- Cyclobenzaprine + Selegiline Contraindicated
- Cyclobenzaprine + Selegiline transdermal Contraindicated
Other interactions of Glycopyrrolate
- Glycopyrrolate + Potassium chloride Major
- Amitriptyline + Glycopyrrolate Moderate
- Atropine + Glycopyrrolate Moderate
- Bethanechol + Glycopyrrolate Moderate
- Chlorpromazine + Glycopyrrolate Moderate
- Clomipramine + Glycopyrrolate Moderate
Frequently asked questions
Can I take Cyclobenzaprine with Glycopyrrolate?
MediHelp rates the interaction as moderate. Cyclobenzaprine and Glycopyrrolate 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 drugs have antimuscarinic activity, so combining them increases anticholinergic effects such as dry mouth, constipation, urinary retention, blurred vision and tachycardia. Older adults and patients with glaucoma, prostatic hypertrophy or ileus are at greatest risk.
How serious is the interaction between Cyclobenzaprine and Glycopyrrolate?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for anticholinergic adverse effects such as urinary retention, constipation and confusion, and reduce the dose or choose an alternative if they emerge. Avoid in patients with narrow-angle glaucoma or obstructive uropathy.
What other medicines interact with Cyclobenzaprine?
MediHelp also lists interactions of Cyclobenzaprine with, for example, Isocarboxazid, Linezolid, Phenelzine. The full list is on the Cyclobenzaprine page.
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