Effects of marijuana smoking on subjective ratings and tobacco smoking.
Pharmacology, biochemistry, and behavior September 1986 R Nemeth-Coslett, J E Henningfield, M K O'Keeffe et al.
Multiple measures of tobacco cigarette smoking and subjective and physiological effect were collected during 90 minute test sessions in volunteer cigarette smokers who also had histories of recreational marijuana use. Before sessions, subjects smoked one marijuana cigarette (placebo or 1.29%, 2.84%, 4.00%) using a standardized puffing procedure. Each dose and placebo was given four times to...