The drug is often involved in drug intoxication, including overdoses. Overdose of flunitrazepam may cause long-term sedation, poor balance, and poor speech. In serious overdoses, people may have breathing problems, coma, and possibly death. The overdose will be worse if flunitrazepam is taken with depressants, like alcohol or opiates. Flunitrazepam overdose can be treated with flumazenil. 