Drug interactions
Morphine + Triprolidine
Severity: Major
Morphine and Triprolidine: major interaction.
Last updated Sources: US FDA label
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
Combining a sedating antihistamine with morphine increases drowsiness, psychomotor impairment and the risk of respiratory depression. The risk is higher in older, opioid-naive or respiratory-compromised patients.
What this interaction means in plain words
Morphine and Triprolidine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Morphine belongs to Musculoskeletal; Triprolidine belongs to Respiratory.
Why it happens
Additive CNS and respiratory depression.
What to do
Avoid the combination where possible, or use the lowest effective doses and monitor sedation and respiratory rate. Advise against alcohol and driving.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Triprolidine
Other interactions of Morphine
- Alvimopan + Morphine Contraindicated
- Isocarboxazid + Morphine Contraindicated
- Morphine + Olanzapine / samidorphan Contraindicated
- Morphine + Phenelzine Contraindicated
- Morphine + Tranylcypromine Contraindicated
- Alfentanil + Morphine Major
Frequently asked questions
Can I take Morphine with Triprolidine?
MediHelp rates the interaction as major. Morphine and Triprolidine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Combining a sedating antihistamine with morphine increases drowsiness, psychomotor impairment and the risk of respiratory depression. The risk is higher in older, opioid-naive or respiratory-compromised patients.
How serious is the interaction between Morphine and Triprolidine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible, or use the lowest effective doses and monitor sedation and respiratory rate. Advise against alcohol and driving.
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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