Chlormethiazole, sleep, and drug withdrawal

Abstract
Synopsis: The hypothesis that drug withdrawal delirium was related to a gross disturbance of sleep and a marked excess of REM sleep, suggested that drugs used to treat delirium should depress REM sleep. Chlormethiazole in doses over l g was found to be effective in depressing REM sleep and in blocking the REM sleep rebound when sodium amylobarbitone (400 mg) was stopped abruptly.