Drug interactions
Pentazocine + Sumatriptan
Severity: Minor
Pentazocine and Sumatriptan: minor 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
Pentazocine has weak serotonergic activity, so with a triptan there is a theoretical risk of serotonin syndrome. Documented cases with this pair are scarce and the risk appears low.
What this interaction means in plain words
Pentazocine and Sumatriptan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Pentazocine belongs to Musculoskeletal; Sumatriptan belongs to Central Nervous System.
Why it happens
Possible additive serotonergic effects; mechanism not firmly established.
What to do
No routine change is needed. Counsel the patient to report agitation, tremor, sweating, diarrhea or fever, and stop both drugs if serotonin syndrome is suspected.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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 Sumatriptan
- Almotriptan + Sumatriptan Contraindicated
- Dihydroergotamine intranasal + Sumatriptan Contraindicated
- Dihydroergotamine + Sumatriptan Contraindicated
- Eletriptan + Sumatriptan Contraindicated
- Ergoloid mesylates + Sumatriptan Contraindicated
- Ergotamine + Sumatriptan Contraindicated
Frequently asked questions
Can I take Pentazocine with Sumatriptan?
MediHelp rates the interaction as minor. Pentazocine and Sumatriptan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Pentazocine has weak serotonergic activity, so with a triptan there is a theoretical risk of serotonin syndrome. Documented cases with this pair are scarce and the risk appears low.
How serious is the interaction between Pentazocine and Sumatriptan?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine change is needed. Counsel the patient to report agitation, tremor, sweating, diarrhea or fever, and stop both drugs if serotonin syndrome is 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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