Rohypnol has received a lot of attention because of its association with date rape. Many teen girls and women report having been raped after having rohypnol slipped into their drinks. The drug also causes "anterograde amnesia." This means it's hard to remember what happened while on the drug. Because of this, it can be hard to give important details if a young woman wants to report the rape.
Rohypnol can cause a drop in blood pressure, as well as cause memory loss, drowsiness, dizziness, and an upset stomach. Though it's part of the depressant family of drugs, it causes some people to be overly excited or aggressive.
Users can become physically addicted to rohypnol, so it can cause extreme withdrawal symptoms when users stop.