Drug interactions
Pentazocine + Trimipramine
Severity: Moderate
Pentazocine and Trimipramine: 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
Co-use can increase sedation and impair psychomotor performance, as trimipramine is strongly sedating. Serotonin toxicity is possible but uncommon, and seizure threshold may be lowered.
What this interaction means in plain words
Pentazocine and Trimipramine 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.
Pentazocine belongs to Musculoskeletal; Trimipramine belongs to Central Nervous System.
Why it happens
Additive CNS depression, anticholinergic effects and possible additive serotonergic activity.
What to do
Use the lowest effective doses and counsel about sedation and driving. Monitor for features of serotonin syndrome and stop one agent if suspected.
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 Pentazocine
- Calcium / magnesium / potassium / sodium oxybates + Pentazocine Contraindicated
- Olanzapine / samidorphan + Pentazocine Contraindicated
- Pentazocine + Phenelzine Contraindicated
- Pentazocine + Tranylcypromine Contraindicated
- Alfentanil + Pentazocine Major
- Alprazolam + Pentazocine Major
Other interactions of Trimipramine
- Disopyramide + Trimipramine Contraindicated
- Dofetilide + Trimipramine Contraindicated
- Ibutilide + Trimipramine Contraindicated
- Isocarboxazid + Trimipramine Contraindicated
- Pentamidine + Trimipramine Contraindicated
- Phenelzine + Trimipramine Contraindicated
Frequently asked questions
Can I take Pentazocine with Trimipramine?
MediHelp rates the interaction as moderate. Pentazocine and Trimipramine 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. Co-use can increase sedation and impair psychomotor performance, as trimipramine is strongly sedating. Serotonin toxicity is possible but uncommon, and seizure threshold may be lowered.
How serious is the interaction between Pentazocine and Trimipramine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lowest effective doses and counsel about sedation and driving. Monitor for features of serotonin syndrome and stop one agent if suspected.
What other medicines interact with Pentazocine?
MediHelp also lists interactions of Pentazocine with, for example, Calcium / magnesium / potassium / sodium oxybates, Olanzapine / samidorphan, Phenelzine. The full list is on the Pentazocine page.
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