Drug interactions
Homatropine + Maprotiline
Severity: Moderate
Homatropine and Maprotiline: 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
Homatropine is an antimuscarinic and maprotiline has anticholinergic properties. Combined use may add to dry mouth, constipation, urinary retention, blurred vision and cognitive effects, especially in older adults.
What this interaction means in plain words
Homatropine and Maprotiline 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.
Homatropine belongs to Genitourinary; Maprotiline belongs to Central Nervous System.
Why it happens
Additive muscarinic receptor blockade.
What to do
Monitor for anticholinergic effects, in particular urinary retention, constipation and confusion. Lower the dose or use an alternative if these appear.
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
Other interactions of Homatropine
- Amantadine + Homatropine Moderate
- Amitriptyline + Homatropine Moderate
- Atropine + Homatropine Moderate
- Benztropine + Homatropine Moderate
- Bethanechol + Homatropine Moderate
- Chlorpromazine + Homatropine Moderate
Frequently asked questions
Can I take Homatropine with Maprotiline?
MediHelp rates the interaction as moderate. Homatropine and Maprotiline 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. Homatropine is an antimuscarinic and maprotiline has anticholinergic properties. Combined use may add to dry mouth, constipation, urinary retention, blurred vision and cognitive effects, especially in older adults.
How serious is the interaction between Homatropine and Maprotiline?
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, in particular urinary retention, constipation and confusion. Lower the dose or use an alternative if these appear.
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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