Mandrax is a recreational drug due to its euphoric effect and the properties are the reason why it was initially meant to be a useful sedative and anxiolytic. Overdose of Quaaludes can lead to seizures, coma or death. The range of dangerous doses vary widely. Taking doses of over 300 mg can be dangerous for first time users. Quaalude doses of about 8,000 mg per day can be fatal; however, even higher doses may not be deadly depending upon the state of the user's tolerance.