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Schmidt MD, Schmidt MS, Butelman ER, Harding WW, Tidgewell K, Murry DJ, Kreek MJ, Prisinzano TE. 
“Pharmacokinetics of the plant-derived kappa-opioid hallucinogen salvinorin A in nonhuman primates”. 
Synapse. 2005 Dec 1;58(3):208-10.
Salvinorin A, a potent hallucinogen isolated from the leaves of Salvia divinorum, has gained popularity among adolescents in the USA. No detailed study of the pharmacokinetics has been conducted in vivo. The present study investigates the in vivo pharmacokinetics of salvinorin A (0.032 mg/kg, i.v. bolus) in rhesus monkeys (n=4, 2 male, 2 female). The elimination t(1/2) was rapid (56.6+/-24.8 min) for all subjects. Pharmacokinetic differences (distribution t(1/2), elimination t(1/2), and AUC) were observed between males and females, suggesting potential sex differences in its pharmacologic effects. Salvinorin B, the presumed major metabolite, is observed to accumulate ex vivo; however, in this study it never reached the limit of detection.
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