Drug interactions
Isoniazid + Pentazocine
Severity: Minor
Isoniazid and Pentazocine: 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
Isoniazid has weak monoamine oxidase inhibiting activity, so a serotonin-related interaction with opioids is theoretically possible. Clinically significant reactions with pentazocine are not well documented.
What this interaction means in plain words
Isoniazid and Pentazocine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Isoniazid belongs to Anti Bacterial; Pentazocine belongs to Musculoskeletal.
Why it happens
Weak MAO inhibition by isoniazid may add to serotonergic effects; the mechanism for pentazocine is not firmly established.
What to do
No routine change is required. Watch for signs of serotonin toxicity and evaluate promptly if agitation, tremor or hyperthermia develop.
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 Isoniazid
Frequently asked questions
Can I take Isoniazid with Pentazocine?
MediHelp rates the interaction as minor. Isoniazid and Pentazocine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Isoniazid has weak monoamine oxidase inhibiting activity, so a serotonin-related interaction with opioids is theoretically possible. Clinically significant reactions with pentazocine are not well documented.
How serious is the interaction between Isoniazid and Pentazocine?
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 required. Watch for signs of serotonin toxicity and evaluate promptly if agitation, tremor or hyperthermia develop.
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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