Drug interactions
Amitriptyline + Atropine
Severity: Moderate
Amitriptyline and Atropine: 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 have antimuscarinic activity, so combined use can produce additive effects such as dry mouth, constipation, urinary retention, blurred vision and tachycardia. Older patients and those with glaucoma or prostatic hyperplasia are at particular risk.
What this interaction means in plain words
Amitriptyline and Atropine 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.
Amitriptyline belongs to Central Nervous System; Atropine belongs to Miscellaneous.
Why it happens
Additive blockade of muscarinic acetylcholine receptors.
What to do
Monitor for anticholinergic toxicity such as urinary retention, ileus, confusion and tachycardia. Use the lowest effective doses or choose a less anticholinergic alternative in high-risk patients.
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
Other interactions of Atropine
- Atropine + Eluxadoline Major
- Atropine + Henbane Major
- Atropine + Pramlintide Major
- Abobotulinumtoxina + Atropine Moderate
- Aclidinium + Atropine Moderate
- Amantadine + Atropine Moderate
Frequently asked questions
Can I take Amitriptyline with Atropine?
MediHelp rates the interaction as moderate. Amitriptyline and Atropine 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 have antimuscarinic activity, so combined use can produce additive effects such as dry mouth, constipation, urinary retention, blurred vision and tachycardia. Older patients and those with glaucoma or prostatic hyperplasia are at particular risk.
How serious is the interaction between Amitriptyline and Atropine?
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 such as urinary retention, ileus, confusion and tachycardia. Use the lowest effective doses or choose a less anticholinergic alternative in high-risk patients.
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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