What is Klonopin (clonazepam)? Klonopin pill is a round pill containing clonazepam, a prescription medication belonging to a group of drugs known as benzodiazepines. Klonopin pills exert their effect primarily by the modulation of function of the neurotransmitter gamma-Aminobutyric acid (GABA) in the brain, this in turn, leads to enhanced inhibition of neuronal firing slowing down brain activity and producing a […]