How does Rohypnol work and what are its long term use side effects as a date rape drug?

Is a sedative in the. Benzodiazepine class of drugs. It is not approved or sold legally in the us. Side effects include blackouts, with a complete loss of memory, dizziness and disorientation, nausea and vomiting, headache, difficulty breathing & with motor movements and speaking. The combination of alcohol & Rohypnol is particularly hazardous. Long term use impairs general learning and causes tolerance and dependence.