Klonopin is the brand name for clonazepam, which is a medication primarily used to treat seizures, panic disorder, and certain movement disorders. Clonazepam belongs to a class of drugs called benzodiazepines, which act on the central nervous system to produce a calming effect.Klonopin is the brand name for clonazepam, which is a medication primarily used to treat seizures, panic disorder, and certain movement disorders. Clonazepam belongs to a class of drugs called benzodiazepines, which act on the central nervous system to produce a calming effect.Klonopin is the brand name for clonazepam, which is a medication primarily used to treat seizures, panic disorder, and certain movement disorders. Clonazepam belongs to a class of drugs called benzodiazepines, which act on the central nervous system to produce a calming effect.