Clonazepam

Clonazepam is a benzodiazepine drug having anxiolytic, anticonvulsant, muscle relaxant, and hypnotic properties. It is marketed by Roche under the trade name Klonopin (or Klonapin) in the United States and Rivotril in Argentina, Australia, Brazil, Canada, Costa Rica, India, Mexico and Europe. Other names such as Ravotril, Rivatril, Rivotril, Clonex, Paxam, Petril or Kriadex are known throughout the rest of the world. Clonazepam has an unusually long elimination half-life of 18–50 hours, making it generally considered to be among the long-acting benzodiazepines. Clonazepam is a chlorinated derivative of nitrazepam and therefore a chloro-nitrobenzodiazepine.