Drug interactions
Diphenoxylate + Nalbuphine
Severity: Moderate
Diphenoxylate 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
Diphenoxylate is an opioid antidiarrheal that can cause sedation at high doses. Nalbuphine may add to CNS depression and could precipitate withdrawal in opioid-dependent patients.
What this interaction means in plain words
Diphenoxylate 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 belongs to Gastrointestinal Tract; Nalbuphine belongs to Musculoskeletal.
Why it happens
Additive opioid CNS depression combined with mixed agonist-antagonist activity at mu receptors.
What to do
Avoid in opioid-dependent patients. Otherwise use standard antidiarrheal doses and monitor for sedation and withdrawal.
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 Nalbuphine
- Alvimopan + Nalbuphine Contraindicated
- Nalbuphine + Olanzapine / samidorphan Contraindicated
- Alprazolam + Nalbuphine Major
- Amobarbital + Nalbuphine Major
- Benzhydrocodone / acetaminophen + Nalbuphine Major
- Brexanolone + Nalbuphine Major
Other interactions of Diphenoxylate
Frequently asked questions
Can I take Diphenoxylate with Nalbuphine?
MediHelp rates the interaction as moderate. Diphenoxylate 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 is an opioid antidiarrheal that can cause sedation at high doses. Nalbuphine may add to CNS depression and could precipitate withdrawal in opioid-dependent patients.
How serious is the interaction between Diphenoxylate 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 in opioid-dependent patients. Otherwise use standard antidiarrheal doses and monitor for sedation and withdrawal.
What other medicines interact with Nalbuphine?
MediHelp also lists interactions of Nalbuphine with, for example, Alvimopan, Olanzapine / samidorphan, Alprazolam. The full list is on the Nalbuphine page.
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