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Thirteen paid student volunteers (9 male, 4 female) were used in a double-blind crossover experiment to investigate the effects of a therapeutic dose of dexchlorpheniramine alone, and in combination with a social dose of ethanol on perceptual, cognitive and motor functions. Both ethanol (0.75 g/kg) and dexchlorpheniramine (4 mg/70 kg) were given orally. Although a synergistic effect of dexchlorpheniramine with ethanol was only observed in some of the tests, a delayed recovery from the effects of the combination was noted. Subjective data indicated that the sedative effects of dexchlorpheniramine were more pronounced in the presence of ethanol. Language: en

Twelve paid student volunteers (8 male, 4 female) were used in a double-blind crossover experiment to investigate the effects of delta9-tetrahydrocannabinol (THC) alone, and in combination with ethanol, on human perceptual, cognitive and motor functions. Both THC (10 mg/70 kg) and ethanol (0-5 g/kg) had little effect when administered alone. The combination of drugs, however, induced a significnat decrement in performance in some of the tests and this interaction was considered to be at least additive. The peak blood ethanol concentration was higher (P = 0-05) when subjects received both ethanol and THC than when they received ethanol alone.

Fifteen paid student volunteers (10 male, five female) were used in a double-blind crossover experiment to further investigated the effects of delta9-tetrahydrocannabinol (THC), alone and in combination with ethanol, on perceptual, cognitive and motor functions. Both ethanol (0-54 g/kg) and THC (15 MG/70 KG) WERE GIVEN ORALLY. Ethanol was not very effective in in+uencing performance but this dose of THC produced marked decrements, predominantly in the latter part of the experiment. When they were given together, an early additive effect was apparent, but later, there was a suggestion of antagonism in that subjects who received the drug combination performed better than those who were given THC along. The interaction between THC and ethanol was considered to be complex. Language: en

We used 17 student volunteers in an experiment to investigate the effects of orally administered mebhydrolin (0.71 mg/kg), alone and in combination with ethanol (0.75 g/kg), on perceptual, cognitive and motor functions. Mebhydrolin did not significantly modify performance when given alone, but showed evidence of enhancing ethanol-induced performance deficits. Histamine challenge experiments indicated that the dose of mebhydrolin used exerted an antihistaminic effect over the period of the ethanol interaction study.

Eighty paid student volunteers (35 male, 45 female) were used in an experiment to investigate the effects of a therapeutic dose of clemastine (1 mg) alone and in combination with a social dose of ethanol (0.54 g/kg) on perceptual, cognitive and motor functions. Both drugs were given orally. Clemastine did not significantly modify performance when given alone, and the performance decrements induced by ethanol were not enhanced by clemastine premedication.