Rivotril Online in the UK: A Guide to Clonazepam, Safe Use and Responsible Access Rivotril is a brand name associated with clonazepam, a medicine belonging to a group of medicines called benzodiazepines. Clonazepam is a prescription-only medicine in the UK and is used for specific medical conditions, including epilepsy, panic disorder, muscle spasms and, in some circumstances, restless legs...