Cyclobarbital, cyclobarbitol or cyclobarbitone is a barbiturate derivative developed in the early 1920s in Germany.
It was available in Russia until 2019, marketed and distributed as Reladorm, a fixed-dose combination pairing 100 mg cyclobarbital and 10 mg diazepam (a benzodiazepine anxiolytic, muscle relaxant, and anticonvulsant) indicated for treating insomnia before it was discontinued in 2019.
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