Drug interactions
Cyclobenzaprine + Pyridostigmine
Severity: Moderate
Cyclobenzaprine and Pyridostigmine: 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
Pyridostigmine increases cholinergic transmission, while cyclobenzaprine has anticholinergic and muscle-relaxant effects that may oppose it. In myasthenia gravis, this may worsen weakness or reduce pyridostigmine benefit.
What this interaction means in plain words
Cyclobenzaprine and Pyridostigmine 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; Pyridostigmine belongs to Central Nervous System.
Why it happens
Pharmacodynamic antagonism between cholinesterase inhibition and anticholinergic activity, plus muscle relaxation.
What to do
In myasthenia gravis, avoid cyclobenzaprine where possible and monitor muscle strength if it is used. Reassess pyridostigmine dosing if symptoms worsen.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Cyclobenzaprine and Pyridostigmine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
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 Pyridostigmine
Frequently asked questions
Can I take Cyclobenzaprine with Pyridostigmine?
MediHelp rates the interaction as moderate. Cyclobenzaprine and Pyridostigmine 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. Pyridostigmine increases cholinergic transmission, while cyclobenzaprine has anticholinergic and muscle-relaxant effects that may oppose it. In myasthenia gravis, this may worsen weakness or reduce pyridostigmine benefit.
How serious is the interaction between Cyclobenzaprine and Pyridostigmine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: In myasthenia gravis, avoid cyclobenzaprine where possible and monitor muscle strength if it is used. Reassess pyridostigmine dosing if symptoms worsen.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
