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  • Title: The pharmacologic effects of daily marijuana smoking in humans.
    Author: Perez-Reyes M, White WR, McDonald SA, Hicks RE, Jeffcoat AR, Cook CE.
    Journal: Pharmacol Biochem Behav; 1991 Nov; 40(3):691-4. PubMed ID: 1666929.
    Abstract:
    Six healthy male, paid volunteers smoked one NIDA cigarette containing 1.0% THC each day for 13 consecutive days. They were tested before and after the period of drug administration by the following procedure: the subjects smoked one NIDA marijuana cigarette containing 1.0% THC followed 15 minutes later by the intravenous infusion of 52 micrograms/min of deuterated THC for 50 minutes. The THC plasma concentrations, ratings of "high" and heart rate effects produced by the combined drug administration were measured, and absolute bioavailability of smoked THC was calculated on Days 1 and 22. Statistical analyses indicate that the only significant changes induced by daily marijuana exposure were in cardioacceleration.
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