Drug interactions
Flumazenil + Temazepam
Severity: Major
Flumazenil and Temazepam: 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
Flumazenil reverses the effects of benzodiazepines such as temazepam by blocking the benzodiazepine site of the GABA-A receptor. In patients who take temazepam regularly, this can trigger acute withdrawal, including agitation and seizures. Seizure risk is higher in long-term users and in mixed overdoses involving proconvulsant drugs.
What this interaction means in plain words
Flumazenil and Temazepam 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.
Flumazenil belongs to Central Nervous System; Temazepam belongs to Central Nervous System.
Why it happens
Flumazenil is a competitive antagonist at the benzodiazepine site of the GABA-A receptor, displacing temazepam and precipitating withdrawal in dependent patients.
What to do
Avoid flumazenil in patients with chronic benzodiazepine use, physical dependence, or seizure disorders, and in mixed overdoses with proconvulsants. If it is needed, give small titrated doses with seizure precautions and monitor for resedation.
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 Temazepam
- Alprazolam + Temazepam Major
- Amobarbital + Temazepam Major
- Buprenorphine + Temazepam Major
- Butorphanol + Temazepam Major
- Carisoprodol + Temazepam Major
- Chloral hydrate + Temazepam Major
Other interactions of Flumazenil
- Amifampridine + Flumazenil Moderate
Frequently asked questions
Can I take Flumazenil with Temazepam?
MediHelp rates the interaction as major. Flumazenil and Temazepam 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. Flumazenil reverses the effects of benzodiazepines such as temazepam by blocking the benzodiazepine site of the GABA-A receptor. In patients who take temazepam regularly, this can trigger acute withdrawal, including agitation and seizures. Seizure risk is higher in long-term users and in mixed overdoses involving proconvulsant drugs.
How serious is the interaction between Flumazenil and Temazepam?
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 flumazenil in patients with chronic benzodiazepine use, physical dependence, or seizure disorders, and in mixed overdoses with proconvulsants. If it is needed, give small titrated doses with seizure precautions and monitor for resedation.
What other medicines interact with Temazepam?
MediHelp also lists interactions of Temazepam with, for example, Alprazolam, Amobarbital, Buprenorphine. The full list is on the Temazepam page.
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