Drug interactions
Diphenoxylate + Triprolidine
Severity: Moderate
Diphenoxylate and Triprolidine: 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 drowsiness and, in overdose, CNS and respiratory depression. Taken with triprolidine, sedation may be increased and anticholinergic effects such as urinary retention and constipation may be additive.
What this interaction means in plain words
Diphenoxylate and Triprolidine 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; Triprolidine belongs to Respiratory.
Why it happens
Additive CNS depressant and anticholinergic effects.
What to do
Monitor for oversedation and anticholinergic toxicity, especially in children and the elderly. Avoid driving and alcohol, and stop the antidiarrheal if ileus or marked abdominal distension appears.
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 Triprolidine
Other interactions of Diphenoxylate
Frequently asked questions
Can I take Diphenoxylate with Triprolidine?
MediHelp rates the interaction as moderate. Diphenoxylate and Triprolidine 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 drowsiness and, in overdose, CNS and respiratory depression. Taken with triprolidine, sedation may be increased and anticholinergic effects such as urinary retention and constipation may be additive.
How serious is the interaction between Diphenoxylate and Triprolidine?
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 oversedation and anticholinergic toxicity, especially in children and the elderly. Avoid driving and alcohol, and stop the antidiarrheal if ileus or marked abdominal distension appears.
What other medicines interact with Triprolidine?
MediHelp also lists interactions of Triprolidine with, for example, Belladonna and opium, Benzhydrocodone / acetaminophen, Brexanolone. The full list is on the Triprolidine page.
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