Rohypnol Flunitrazepam 1MG is an intermediate-acting benzodiazepine with general properties similar to those of Valium (diazepam). Rohypnol is an intermediate-acting benzodiazepine with general properties similar to those of Valium (diazepam). It is used in the short-term treatment of insomnia, as a pre-medication in surgical procedures and for inducing anesthesia.