Is there permanent damage to the brain from a date rape drug like rohypnol?

General learning: Can be affected when taken for prolonged periods. Can result in inability to form new memories and profound sedation. Immediate effects can include respiratory depression (loss of impulse to breathe) when combined with other drugs such as alcohol. If you suspect that you or a friend have been drugged, please go for tests straight away as the chemical takes a few days to clear up.