Drug interactions
Asenapine transdermal + Diphenoxylate-atropine
Severity: Moderate
Asenapine transdermal and Diphenoxylate-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 agents can cause drowsiness, and asenapine also has anticholinergic and CNS-depressant properties. Combined use may deepen sedation and impair psychomotor performance, and the atropine component may add anticholinergic effects.
What this interaction means in plain words
Asenapine transdermal and Diphenoxylate-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.
Why it happens
Additive CNS depression from the opioid diphenoxylate and the antipsychotic, plus additive antimuscarinic effects.
What to do
Monitor for excessive sedation, constipation and urinary retention. Counsel patients to avoid driving and consider limiting the diphenoxylate-atropine dose and duration.
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 Diphenoxylate-atropine
- Diphenoxylate-atropine + Isocarboxazid Contraindicated
- Diphenoxylate-atropine + Phenelzine Contraindicated
- Diphenoxylate-atropine + Tranylcypromine Contraindicated
- Alfentanil + Diphenoxylate-atropine Major
- Alvimopan + Diphenoxylate-atropine Major
- Amitriptyline + Diphenoxylate-atropine Major
Frequently asked questions
Can I take Asenapine transdermal with Diphenoxylate-atropine?
MediHelp rates the interaction as moderate. Asenapine transdermal and Diphenoxylate-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 agents can cause drowsiness, and asenapine also has anticholinergic and CNS-depressant properties. Combined use may deepen sedation and impair psychomotor performance, and the atropine component may add anticholinergic effects.
How serious is the interaction between Asenapine transdermal and Diphenoxylate-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 excessive sedation, constipation and urinary retention. Counsel patients to avoid driving and consider limiting the diphenoxylate-atropine dose and duration.
What other medicines interact with Diphenoxylate-atropine?
MediHelp also lists interactions of Diphenoxylate-atropine with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Diphenoxylate-atropine page.
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