Action of cannabidiol on the anxiety and other effects produced by delta 9-THC in normal subjects.

The object of the experiment was to verify whether cannabidiol (CBD) reduces the anxiety provoked by delta 9-THC in normal volunteers, and whether this effect occurs by a general block of the action of delta 9-THC or by a specific anxiolytic effect. Appropriate measurements and scales were utilized and the eight volunteers received, the following treatments in a double-blind procedure: 0.5 mg/kg delta 9-THC, 1 mg/kg CBD, a mixture containing 0.

Characteristics of the stimulus produced by the mixture of cannabidiol with delta 9-tetrahydrocannabinol.

Rats, trained to discriminate between delta 9-THC (5 mg/kg) and a control solution, using a T-maze, were submitted to generalization tests wih delta 9-THC (2.5 and 1.25 mg/kg), CBD (40 mg/kg) and the mixtures of delta 9-THC (5 and 1.

Delta 9-Tetrahydrocannabinol, ethanol, and amphetamine as discriminative stimuli-generalization tests with other drugs.

Three groups of rats (A, B, C) were trained in a T-maze discriminate between drug-and control solution-induced internal discriminative stimuli. The drugs used to induce discriminative stimuli were: delta 9-THC, 5.0 mg/kg (Group A); ethanol, 1.