Drug interactions
Difenoxin + Triprolidine
Severity: Moderate
Difenoxin 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
Difenoxin is an opioid antidiarrheal and the active metabolite of diphenoxylate, and can cause drowsiness. Combined with sedating triprolidine, central depression may be enhanced, and the anticholinergic effects of the antihistamine may add to constipating and urinary-retention effects.
What this interaction means in plain words
Difenoxin 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.
Difenoxin belongs to Gastrointestinal Tract; Triprolidine belongs to Respiratory.
Why it happens
Additive CNS depression and additive antimuscarinic and gut-slowing effects.
What to do
Monitor for excessive sedation, urinary retention and severe constipation. Reduce the dose or stop one agent if marked drowsiness or abdominal distension develops.
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 Difenoxin
Frequently asked questions
Can I take Difenoxin with Triprolidine?
MediHelp rates the interaction as moderate. Difenoxin 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. Difenoxin is an opioid antidiarrheal and the active metabolite of diphenoxylate, and can cause drowsiness. Combined with sedating triprolidine, central depression may be enhanced, and the anticholinergic effects of the antihistamine may add to constipating and urinary-retention effects.
How serious is the interaction between Difenoxin 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 excessive sedation, urinary retention and severe constipation. Reduce the dose or stop one agent if marked drowsiness or abdominal distension develops.
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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