Drug interactions
Amitriptyline + Methscopolamine
Severity: Moderate
Amitriptyline and Methscopolamine: 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 block muscarinic receptors, so combining them may increase dry mouth, constipation, urinary retention, blurred vision and tachycardia. Older patients and those with glaucoma or prostatic hypertrophy are at particular risk, and confusion may occur.
What this interaction means in plain words
Amitriptyline and Methscopolamine 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.
Why it happens
Additive antimuscarinic effects.
What to do
Monitor for anticholinergic effects such as urinary retention, constipation and confusion, and reduce doses or choose a non-anticholinergic alternative if they occur. Avoid in narrow-angle glaucoma.
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 Amitriptyline
- Amitriptyline + Isocarboxazid Contraindicated
- Amitriptyline + Methylene blue Contraindicated
- Amitriptyline + Phenelzine Contraindicated
- Amitriptyline + Pimozide Contraindicated
- Amitriptyline + Procarbazine Contraindicated
- Amitriptyline + Safinamide Contraindicated
Frequently asked questions
Can I take Amitriptyline with Methscopolamine?
MediHelp rates the interaction as moderate. Amitriptyline and Methscopolamine 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 block muscarinic receptors, so combining them may increase dry mouth, constipation, urinary retention, blurred vision and tachycardia. Older patients and those with glaucoma or prostatic hypertrophy are at particular risk, and confusion may occur.
How serious is the interaction between Amitriptyline and Methscopolamine?
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 effects such as urinary retention, constipation and confusion, and reduce doses or choose a non-anticholinergic alternative if they occur. Avoid in narrow-angle glaucoma.
What other medicines interact with Amitriptyline?
MediHelp also lists interactions of Amitriptyline with, for example, Isocarboxazid, Methylene blue, Phenelzine. The full list is on the Amitriptyline page.
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