Rohypnol, the trade name for flunitrazepam, has been a concern for the last few years because of its abuse as a "date rape" drug. People may unknowingly be given the drug which, when mixed with alcohol, can incapacitate a victim and prevent them from resisting sexual assault. Also, rohypnol may be lethal when mixed with alcohol and/or other depressants.
Rohypnol produces sedative-hypnotic effects including muscle relaxation and amnesia; it can also produce physical and psychological dependence.
In Miami, one of the first sites of rohypnol abuse, poison control centers report an increase in withdrawal seizures among people addicted to rohypnol. Illicit use of Rohypnol began in Europe in the 1970s and started appearing in the United States in the early 1990s, where it became known as "rophies," "roofies," "roach," "rope," and the "date rape" drug. Another very similar drug is now being sold as "roofies" in Miami, Minnesota, and Texas. This is clonazepam, marketed in the U.S. as Klonopin and in Mexico as Rivotril. It is sometimes abused to enhance the effects of heroin and other opiates. Based on emergency room admission information, Boston, San Francisco, Phoenix, and Seattle appear to have the highest use rates of clonazepam.