Rivotril (Klonopin) - Roche Clonazepam is a benzodiazepine derivative with highly potent anticonvulsant, muscle relaxant and anxiolytic properties.[1] It is marketed by Roche under the trade-names Klonopin in the United States, Ravotril in Chile and Rivotril throughout the large majority of the rest of the world.[2] Clonazepam is a chlorinated derivative of nitrazepam[3] and a nitrobenzodiazepine like nitrazepam.[4] Clonazepam is second to Alprazolam as the most abused benzodiazepine in the United States.[5