A dose‐response study examining the effects of ritanserin on human slow wave sleep.

Abstract
This study investigated the effects of placebo, 1 mg, 3 mg, 10 mg and 30 mg ritanserin and 10 mg diazepam on human sleep. Twelve normal volunteers participated in this randomized, double‐blind, placebo‐ controlled cross‐over sleep study. A clear dose‐response relationship was found for ritanserin with higher doses evoking increased duration of slow wave sleep.