From the University of Virginia Dept. of Student Health:

"Rohypnol (flunitrazepam) is the brand name of a sleeping pill prescribed for insomnia in Mexico, South America, Europe and Asia. It has NOT been approved for use by the U.S. Food and Drug Administration in the United States but this has not stopped its distribution. Rohypnol belongs to the family of medications called benzodiazepines which includes Valium, Librium and Xanax.

Rophypnol is being called the "Date Rape Drug" or the "Quaalude of the '90s" because it is the newest drug to be abused by adding it to alcohol. When combined with alcohol, marijuana, cocaine or other drugs, it can provide a rapid and dramatic "high." Even if used by itself, Rohypnol's effects are very similar to intoxication.

Street names for Rohypnol include: Roofies, Roche, Rope, Ruffies, R-2, Roaches, Rib and Mexican Valium."

http://www.virginia.edu/~std-hlth/rohypnol2.htm

ESSXJAY, I wouldn't recommend them while training or running