Drug interactions
Cyclobenzaprine + Memantine-donepezil
Severity: Moderate
Cyclobenzaprine and Memantine-donepezil: 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 that may oppose donepezil. This can reduce cognitive benefit and increase confusion and sedation in older patients.
What this interaction means in plain words
Cyclobenzaprine and Memantine-donepezil 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; Memantine-donepezil belongs to Central Nervous System.
Why it happens
Pharmacodynamic antagonism between anticholinergic activity and cholinesterase inhibition.
What to do
Avoid cyclobenzaprine in patients with dementia where possible and use a non-pharmacological or less anticholinergic option. Monitor cognition and sedation if it is used.
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 Memantine-donepezil
- Dronedarone + Memantine-donepezil Contraindicated
- Memantine-donepezil + Thioridazine Contraindicated
- Amantadine + Memantine-donepezil Major
- Amiodarone + Memantine-donepezil Major
- Amisulpride + Memantine-donepezil Major
- Amitriptyline + Memantine-donepezil Major
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 Memantine-donepezil?
MediHelp rates the interaction as moderate. Cyclobenzaprine and Memantine-donepezil 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 that may oppose donepezil. This can reduce cognitive benefit and increase confusion and sedation in older patients.
How serious is the interaction between Cyclobenzaprine and Memantine-donepezil?
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 cyclobenzaprine in patients with dementia where possible and use a non-pharmacological or less anticholinergic option. Monitor cognition and sedation if it is used.
What other medicines interact with Memantine-donepezil?
MediHelp also lists interactions of Memantine-donepezil with, for example, Dronedarone, Thioridazine, Amantadine. The full list is on the Memantine-donepezil page.
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