The drug known as Clonazepam is a drug of the benzodiazepine class. This medication is ideally an anti-anxiety drug and is a prescription only medicine. It is sometimes used to control and prevent seizures, as well as panic attacks. It works by affecting the function of GABA, a neurotransmitter in the brain. It essentially helps to calm the nerves and the brain. Excessive activity in the brain does lead to anxiety and conditions such as panic attacks. This drug works by helping to calm the brain and ease its activity.