Drug interactions
Benzhydrocodone / acetaminophen + Carisoprodol
Severity: Major
Benzhydrocodone / acetaminophen and Carisoprodol: 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 an opioid prodrug of hydrocodone, and carisoprodol is a sedating muscle relaxant. Together they can produce profound sedation, respiratory depression, coma and death.
What this interaction means in plain words
Benzhydrocodone / acetaminophen and Carisoprodol 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 CNS and respiratory depression from opioid and carisoprodol (via its meprobamate metabolite) effects.
What to do
Avoid unless other options are inadequate; use the lowest doses for the shortest time. Monitor for sedation and respiratory depression, and consider naloxone availability.
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 Carisoprodol
Frequently asked questions
Can I take Benzhydrocodone / acetaminophen with Carisoprodol?
MediHelp rates the interaction as major. Benzhydrocodone / acetaminophen and Carisoprodol 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 an opioid prodrug of hydrocodone, and carisoprodol is a sedating muscle relaxant. Together they can produce profound sedation, respiratory depression, coma and death.
How serious is the interaction between Benzhydrocodone / acetaminophen and Carisoprodol?
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 unless other options are inadequate; use the lowest doses for the shortest time. Monitor for sedation and respiratory depression, and consider naloxone availability.
What other medicines interact with Carisoprodol?
MediHelp also lists interactions of Carisoprodol with, for example, Alfentanil, Alprazolam, Amobarbital. The full list is on the Carisoprodol page.
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