Drug interactions
Buprenorphine + Diphenoxylate-atropine
Severity: Moderate
Buprenorphine 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
Diphenoxylate is an opioid, and buprenorphine is a partial agonist with high receptor affinity. Together they can cause additive CNS depression, while in opioid-dependent patients buprenorphine may displace full agonists and precipitate withdrawal. Atropine adds anticholinergic effects.
What this interaction means in plain words
Buprenorphine 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.
Buprenorphine belongs to Musculoskeletal; Diphenoxylate-atropine belongs to Gastrointestinal Tract.
Why it happens
Additive opioid and anticholinergic effects, with competitive displacement of diphenoxylate by buprenorphine at mu receptors.
What to do
Avoid routine co-use; if diarrhea treatment is needed in a buprenorphine-treated patient, use non-opioid options such as loperamide at standard doses with monitoring. Watch for sedation or withdrawal symptoms.
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
Other interactions of Buprenorphine
- Alvimopan + Buprenorphine Contraindicated
- Buprenorphine + Calcium / magnesium / potassium / sodium oxybates Contraindicated
- Buprenorphine + Olanzapine / samidorphan Contraindicated
- Buprenorphine + Phenelzine Contraindicated
- Buprenorphine + Pimozide Contraindicated
- Buprenorphine + Thioridazine Contraindicated
Frequently asked questions
Can I take Buprenorphine with Diphenoxylate-atropine?
MediHelp rates the interaction as moderate. Buprenorphine 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. Diphenoxylate is an opioid, and buprenorphine is a partial agonist with high receptor affinity. Together they can cause additive CNS depression, while in opioid-dependent patients buprenorphine may displace full agonists and precipitate withdrawal. Atropine adds anticholinergic effects.
How serious is the interaction between Buprenorphine 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: Avoid routine co-use; if diarrhea treatment is needed in a buprenorphine-treated patient, use non-opioid options such as loperamide at standard doses with monitoring. Watch for sedation or withdrawal symptoms.
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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