Drug interactions
Diphenoxylate-atropine + Nalbuphine
Severity: Moderate
Diphenoxylate-atropine and Nalbuphine: 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
Nalbuphine is a mixed agonist-antagonist opioid that can add sedation to diphenoxylate. In opioid-dependent patients it may precipitate withdrawal. Atropine adds anticholinergic effects.
What this interaction means in plain words
Diphenoxylate-atropine and Nalbuphine 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-atropine belongs to Gastrointestinal Tract; Nalbuphine belongs to Musculoskeletal.
Why it happens
Additive opioid CNS depression, with mu-receptor antagonism by nalbuphine that may precipitate withdrawal.
What to do
Avoid use in opioid-dependent patients; otherwise monitor sedation and respiratory rate. Prefer non-opioid antidiarrheal therapy if possible.
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 Nalbuphine
- Alvimopan + Nalbuphine Contraindicated
- Nalbuphine + Olanzapine / samidorphan Contraindicated
- Alprazolam + Nalbuphine Major
- Amobarbital + Nalbuphine Major
- Benzhydrocodone / acetaminophen + Nalbuphine Major
- Brexanolone + Nalbuphine Major
Frequently asked questions
Can I take Diphenoxylate-atropine with Nalbuphine?
MediHelp rates the interaction as moderate. Diphenoxylate-atropine and Nalbuphine 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. Nalbuphine is a mixed agonist-antagonist opioid that can add sedation to diphenoxylate. In opioid-dependent patients it may precipitate withdrawal. Atropine adds anticholinergic effects.
How serious is the interaction between Diphenoxylate-atropine and Nalbuphine?
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 use in opioid-dependent patients; otherwise monitor sedation and respiratory rate. Prefer non-opioid antidiarrheal therapy if possible.
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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