This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.
Clonazepam belongs to a group of medicines called benzodiazepines.
It's used to control seizures or fits due to epilepsy, involuntary muscle spasms, panic disorder and sometimes restless legs syndrome.
It works by increasing the levels of a calming chemical in your brain called gamma-aminobutyric acid (GABA). This can relieve anxiety, stop seizures and fits or relax tense muscles.
Clonazepam is available on prescription only. It comes as tablets and as a liquid that you swallow.
View the original NHS website page ↗. Refreshed 19 August 2026.
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