alexa Acute tolerance development to the cardiovascular and subjective effects of cocaine.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Fischman MW, Schuster CR, Javaid J, Hatano Y, Davis J

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Abstract Eight normal adult volunteer subjects received an intranasal pretreatment of either 4 (placebo) or 96 mg of cocaine. Sixty minutes later 16, 32 or 48 mg of cocaine was injected i.v. Cocaine plasma levels were determined periodically over a 2-hr period and both cardiovascular effects and verbal report of drug effects were monitored for 8 hr daily. The plasma concentrations of cocaine were always related to the dose administered. When i.v. cocaine was given after a 96-mg intranasal pretreatment, the increase in heart rate was not as great as when an i.v. injection followed a 4-mg inhalation. Comparable changes were obtained in subjective effects as measured on the Addiction Research Center Inventory, the Profile of Mood States and a subjective effects questionnaire. These results suggest that there is a decrease in physiological and subjective effects of cocaine when administered repeatedly in humans. This acute tolerance appeared to have dissipated within 24 hr.
This article was published in J Pharmacol Exp Ther and referenced in Journal of Addiction Research & Therapy

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