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An open trial of L-tyrosine in the treatment of attention deficit disorder, residual type

Published Online:https://doi.org/10.1176/ajp.144.8.1071

To elucidate the role of catecholamines in attention deficit disorder, the authors conducted an open 8-week trial of L-tyrosine in 12 adults with attention deficit disorder, residual type. Eight showed marked to moderate clinical response in 2 weeks; at 6 weeks these eight developed tolerance, suggesting that L-tyrosine is not useful in attention deficit disorder, residual type.

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