Clonazepam
Clonazepam is a benzodiazepine drug having anxiolytic, anticonvulsant, muscle relaxant, sedative, and hypnotic properties. It is marketed under the trade name
Rivotril by Roche in Argentina, Australia, Brazil, Bulgaria, Canada, Colombia, Costa Rica, Denmark, Germany, Ireland, Italy, Mexico, Portugal, South Africa and Spain;
Linotril and
Clonotril in India, South Korea, and other parts of Europe; and under the trade name
Klonopin by Roche in the United States. Other names, such as Ravotril, Rivatril, Iktorivil, Clonex, Paxam, Petril, Naze and Kriadex, are known throughout the world. Clonazepam has an unusually long elimination half-life of 18–50 hours, making it generally considered to be among the longest-acting benzodiazepines. Clonazepam is a chlorinated derivative of nitrazepam and therefore a chloro-nitrobenzodiazepine. Clonazepam has an intermediate onset of action, with a peak blood level occurring one to four hours after oral administration.