Klonopin, a benzodiazepine, is an oral therapy anti-epileptic drug that helps to cure the symptoms of anxiety disorder and seizures, including absence seizures or Lennox-Gastaut syndrome) in adults and children. On the other hand, Klonopin is also used to treat panic attacks in adults, including agoraphobia. Buy Klonopin Online. It works by increasing the activity and functions of GABA levels and the function of neurotransmitters in the brain. As a result, it calms the brain and nerve cells to reduce hyperactivity and produce calming effects.