Thirty inpatients with evidence of tardive dyskinesia secondary to antipsychotic medications participated in this double-blind, controlled, randomized study comparing reserpine, alpha-methyldopa and placebo. Reserpine at doses of 0.75--1.5 mg daily, or alpha-methyldopa at doses of 750--1,500 mg daily, produced a statistically significant improvement in tardive dyskinesia symptomatology compared to the results obtained with placebo.
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