Klonopin is a brand name for the generic medication Clonazepam . It belongs to a class of drugs known as benzodiazepines, which are central nervous system depressants commonly prescribed to treat anxiety, insomnia, and certain seizure disorders.Klonopin , also known by its generic name Claonazepam , is a medication classified as a benzodiazepine. It is commonly prescribed to treat anxiety disorders and insomnia.Klonopin works by enhancing the effects of a naturally occurring chemical in the brain