Sedative effects of intravenous salvinorin A (0.032 and 0.1 mg/kg) in
chaired subjects (n = 3; dose ranging study) (left). Sedative effects
of U69,593 (0.01, 0.032, and 0.056 mg/kg i.v.) (right). Abscissae, time from
intravenous injection (minutes); ordinates, median sedation score. Points
above “BL” represent median baseline preinjection values.