Drug interactions
Atropine + Protriptyline
Severity: Moderate
Atropine and Protriptyline: 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
Protriptyline is a tricyclic antidepressant with anticholinergic effects that add to atropine. This can cause dry mouth, constipation, urinary retention, tachycardia, confusion and angle-closure glaucoma.
What this interaction means in plain words
Atropine and Protriptyline 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 pharmacodynamic effects.
What to do
Monitor for anticholinergic toxicity and heart rate, especially in older patients or those with glaucoma or prostatic hypertrophy. Lower doses or choose an alternative antidepressant if effects occur.
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 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 Atropine with Protriptyline?
MediHelp rates the interaction as moderate. Atropine and Protriptyline 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. Protriptyline is a tricyclic antidepressant with anticholinergic effects that add to atropine. This can cause dry mouth, constipation, urinary retention, tachycardia, confusion and angle-closure glaucoma.
How serious is the interaction between Atropine and Protriptyline?
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 and heart rate, especially in older patients or those with glaucoma or prostatic hypertrophy. Lower doses or choose an alternative antidepressant if effects occur.
What other medicines interact with Atropine?
MediHelp also lists interactions of Atropine with, for example, Eluxadoline, Henbane, Pramlintide. The full list is on the Atropine page.
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