Drug interactions
Benzhydrocodone / acetaminophen + Pentazocine
Severity: Major
Benzhydrocodone / acetaminophen and Pentazocine: major 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
Benzhydrocodone is a prodrug of hydrocodone, a full mu-agonist. Pentazocine can add to sedation and respiratory depression, and may also reduce analgesia or precipitate withdrawal in dependent patients.
What this interaction means in plain words
Benzhydrocodone / acetaminophen and Pentazocine 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.
Why it happens
Additive opioid CNS and respiratory depression with partial mu antagonism by pentazocine.
What to do
Avoid the combination and use a single opioid. If both are necessary, use the lowest doses for the shortest time and monitor respiration, sedation and withdrawal.
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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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
Frequently asked questions
Can I take Benzhydrocodone / acetaminophen with Pentazocine?
MediHelp rates the interaction as major. Benzhydrocodone / acetaminophen and Pentazocine 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. Benzhydrocodone is a prodrug of hydrocodone, a full mu-agonist. Pentazocine can add to sedation and respiratory depression, and may also reduce analgesia or precipitate withdrawal in dependent patients.
How serious is the interaction between Benzhydrocodone / acetaminophen and Pentazocine?
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 and use a single opioid. If both are necessary, use the lowest doses for the shortest time and monitor respiration, sedation and withdrawal.
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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