Drug interactions
Cyclobenzaprine + Glycopyrronium
Severity: Moderate
Cyclobenzaprine and Glycopyrronium: 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
Cyclobenzaprine is structurally related to tricyclic antidepressants and has anticholinergic effects. Together with glycopyrronium it can cause additive dry mouth, constipation, urinary retention, tachycardia and confusion.
What this interaction means in plain words
Cyclobenzaprine and Glycopyrronium 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; Glycopyrronium belongs to Respiratory.
Why it happens
Additive antimuscarinic pharmacodynamic effects.
What to do
Monitor for anticholinergic toxicity, especially in older adults, and reduce the dose or use an alternative muscle relaxant if it develops.
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 Glycopyrronium
- Clozapine + Glycopyrronium Major
- Glycopyrronium + Potassium chloride Major
- Abobotulinumtoxina + Glycopyrronium Moderate
- Aclidinium + Glycopyrronium Moderate
- Amantadine + Glycopyrronium Moderate
- Amitriptyline + Glycopyrronium Moderate
Other interactions of Cyclobenzaprine
- Cyclobenzaprine + Isocarboxazid Contraindicated
- Cyclobenzaprine + Linezolid Contraindicated
- Cyclobenzaprine + Phenelzine Contraindicated
- Cyclobenzaprine + Safinamide Contraindicated
- Cyclobenzaprine + Selegiline Contraindicated
- Cyclobenzaprine + Selegiline transdermal Contraindicated
Frequently asked questions
Can I take Cyclobenzaprine with Glycopyrronium?
MediHelp rates the interaction as moderate. Cyclobenzaprine and Glycopyrronium 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 is structurally related to tricyclic antidepressants and has anticholinergic effects. Together with glycopyrronium it can cause additive dry mouth, constipation, urinary retention, tachycardia and confusion.
How serious is the interaction between Cyclobenzaprine and Glycopyrronium?
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 toxicity, especially in older adults, and reduce the dose or use an alternative muscle relaxant if it develops.
What other medicines interact with Glycopyrronium?
MediHelp also lists interactions of Glycopyrronium with, for example, Clozapine, Potassium chloride, Abobotulinumtoxina. The full list is on the Glycopyrronium page.
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