Does Nalmefene Hydrochloride Interact with Flumazenil?
Nalmefene Hydrochloride and Flumazenil have a unknown drug interaction according to U.S. FDA drug labeling data. Preclinical studies show both drugs can induce seizures in animals. Coadministration produced fewer seizures than expected, suggesting no adverse interaction likely, but seizure risk remains a potential concern. The mechanism involves both agents have seizure-inducing potential. Patients taking both medications should consult their healthcare provider before starting, stopping, or changing the dosage of either drug. This information is based on official FDA drug labeling sourced from OpenFDA and the NIH National Library of Medicine.
- Severity
- Unknown
- Flumazenil Class
- Benzodiazepine Antagonist
- Management
- Consult your pharmacist
- Data Source
- U.S. FDA via OpenFDA
How This Interaction Works
The interaction between Nalmefene Hydrochloride and Flumazenil occurs because both agents have seizure-inducing potential. Clinically, this means preclinical studies show both drugs can induce seizures in animals. coadministration produced fewer seizures than expected, suggesting no adverse interaction likely, but seizure risk remains a potential concern.
What To Tell Your Doctor or Pharmacist
If you are taking Nalmefene Hydrochloride and your doctor is considering prescribing Flumazenil (or vice versa), make sure to:
- Inform your doctor and pharmacist of all current medications, including over-the-counter drugs and supplements
- Ask whether the benefits of combining these medications outweigh the risks for your specific situation
- Ask what symptoms to watch for that would indicate the interaction is causing problems
- Never stop or change either medication without first consulting your healthcare provider