Drug interactions
Atropine + Homatropine
Severity: Moderate
Atropine and Homatropine: 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 are antimuscarinic agents, so combined use adds to anticholinergic effects. Systemic effects include dry mouth, tachycardia, urinary retention and confusion, and ophthalmic use may raise intraocular pressure in susceptible patients.
What this interaction means in plain words
Atropine and Homatropine 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.
Atropine belongs to Miscellaneous; Homatropine belongs to Genitourinary.
Why it happens
Additive muscarinic receptor antagonism.
What to do
Avoid duplicate antimuscarinic therapy where possible. Monitor for anticholinergic toxicity and intraocular pressure changes.
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
Other interactions of Homatropine
- Amantadine + Homatropine Moderate
- Amitriptyline + Homatropine Moderate
- Benztropine + Homatropine Moderate
- Bethanechol + Homatropine Moderate
- Chlorpromazine + Homatropine Moderate
- Clomipramine + Homatropine Moderate
Frequently asked questions
Can I take Atropine with Homatropine?
MediHelp rates the interaction as moderate. Atropine and Homatropine 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 are antimuscarinic agents, so combined use adds to anticholinergic effects. Systemic effects include dry mouth, tachycardia, urinary retention and confusion, and ophthalmic use may raise intraocular pressure in susceptible patients.
How serious is the interaction between Atropine and Homatropine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid duplicate antimuscarinic therapy where possible. Monitor for anticholinergic toxicity and intraocular pressure changes.
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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