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Fenadiazole entered the ranking for the first time today at position #. This is its highest position ever recorded.
This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-07-04 and was most recently seen on 2026-07-04.
Fenadiazole, also known as phénadiazole and sold under the brand names Hypnazol, Eudormil, and Viodor, is a hypnotic and sedative medication which has been used to treat insomnia but is no longer marketed. It is described as a non-barbiturate hypnotic with marked or profound hypnotic and sedative properties in animals, variable hypnotic effects in humans, additional anticonvulsant, antithermal, and spasmolytic effects, and a generally well-tolerated profile in humans. The drug was synthesized, pharmacologically characterized, patented, and marketed by the French pharmaceutical company Laboratoires Jacques Logeais between 1960 and 1962. As a hypnotic and sedative, fenadiazole has a unique oxadiazole-based chemical structure. It may be chemically related to certain other hypnotics and sedatives with atypical chemical structures. Fenadiazole was encountered online as a novel designer drug in 2025.
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