Klonopin is an oral therapy prescription and is a powerful anticonvulsant medication that helps to treat anxiety disorders and certain seizure disorders in adults and children; for the absence of seizures (Lennox-Gastaut syndrome). It belongs to the benzodiazepine group of drugs that works in the brain by increasing the activity and functions of specific chemical messengers, neurotransmitters, and GABA levels. These balanced GABA levels in the brain relax the brain and nerve cells, reducing hyperactivity and anxiety symptoms. Buy Klonopin Online. When you take this drug, it starts its effects within one hour, lasting up to six hours.