Drug interactions
Carisoprodol + Meprobamate
Severity: Major
Carisoprodol and Meprobamate: major interaction.
Last updated Sources: US FDA label
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
Meprobamate is the active metabolite of carisoprodol, so combining them duplicates therapy and raises meprobamate exposure. This increases the risk of excessive sedation, dependence and overdose toxicity.
What this interaction means in plain words
Carisoprodol and Meprobamate 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
Therapeutic duplication: carisoprodol is metabolized to meprobamate, giving additive CNS depression.
What to do
Avoid using the two together; choose one agent only.
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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References
Other interactions of Carisoprodol
Frequently asked questions
Can I take Carisoprodol with Meprobamate?
MediHelp rates the interaction as major. Carisoprodol and Meprobamate 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. Meprobamate is the active metabolite of carisoprodol, so combining them duplicates therapy and raises meprobamate exposure. This increases the risk of excessive sedation, dependence and overdose toxicity.
How serious is the interaction between Carisoprodol and Meprobamate?
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 using the two together; choose one agent only.
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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