Drug interactions
Maprotiline + Propantheline
Severity: Moderate
Maprotiline and Propantheline: 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. Together they can cause marked dry mouth, constipation, urinary retention, blurred vision, tachycardia and confusion, with greater risk in older adults and those with glaucoma or ileus.
What this interaction means in plain words
Maprotiline and Propantheline 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 toxicity including urinary retention, constipation and cognitive change, and reduce doses or switch if symptoms appear. Avoid in patients with narrow-angle glaucoma or bowel obstruction.
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 Maprotiline
- Arsenic trioxide + Maprotiline Contraindicated
- Disopyramide + Maprotiline Contraindicated
- Dofetilide + Maprotiline Contraindicated
- Ibutilide + Maprotiline Contraindicated
- Isocarboxazid + Maprotiline Contraindicated
- Maprotiline + Methylene blue Contraindicated
Frequently asked questions
Can I take Maprotiline with Propantheline?
MediHelp rates the interaction as moderate. Maprotiline and Propantheline 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. Together they can cause marked dry mouth, constipation, urinary retention, blurred vision, tachycardia and confusion, with greater risk in older adults and those with glaucoma or ileus.
How serious is the interaction between Maprotiline and Propantheline?
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 including urinary retention, constipation and cognitive change, and reduce doses or switch if symptoms appear. Avoid in patients with narrow-angle glaucoma or bowel obstruction.
What other medicines interact with Maprotiline?
MediHelp also lists interactions of Maprotiline with, for example, Arsenic trioxide, Disopyramide, Dofetilide. The full list is on the Maprotiline page.
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