Rohypnol is the trade name for flunitrazepam, a sedative-hypnotic drug used medically in a number of countries. Its street names include "roofies," "roach," "R-2," "trip and fall," and "rope." Rohypnol has become a widely abused drug in many countries, including the United States, Sweden, Mexico, Italy, the United Kingdom, and South Africa. This trend is troubling because many users regard the drug as relatively safe. When used properly for medical reasons, the drug is not dangerous; but illegal use of Rohypnol has many dangerous and undesirable effects. It can cause violent behavior and accidents as well as coma, memory loss, and death. Because the drug can cause unconsciousness and amnesia (loss of memory), Rohypnol has been used in sexual assaults in the United States. Rohypnol is commonly known as the "date rape drug" for this reason. It has also been used in robberies in a number of countries...