Caffeine versus methylphenidate and d-amphetamine in minimal brain dysfunction: a double-blind comparison

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Abstract
The authors compared the efficacy of caffeine, methylphenidate, and d-amphetamine in children with minimal brain dysfunction using a double-blind crossover design. The slight improvement with caffeine was not significantly better than placebo. Both prescription drugs resulted in significant improvement and were significantly superior to caffeine. The authors suggest that the discrepancy between these results and an earlier, more optimistic report mat stem from the use in this study of pure caffeine rather than whole coffee.

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