Flunitrazepam, also known as Rohypnol among other names, is an intermediate acting benzodiazepine used in some countries to treat severe insomnia and in fewer, early in anesthesia. As with other hypnotics, flunitrazepam has been advised to be prescribed only on a short-term basis or by those with chronic insomnia on an occasional basis. It was patented in 1962 and came into medical use in 1974. Flunitrazepam has been referred to as a date rape drug, though the percentage of reported rape cases in which it is involved is small.
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