Prophylactic Antiparkinson Drug Use: I. Initial Prophylaxis and Prevention of Extrapyramidal Side Effects

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Abstract
The use of prophylactic antiparkinson medications during neuroleptic treatment is controversial. Although the efficacy of these agents in the treatment of extrapyramidal side effects is well established, the questions of when to initiate therapy and for how long remain unanswered. There are only a few double-blind, placebo-controlled studies on the value of concurrent antiparkinson drug use at the beginning of neuroleptic treatment. The authors reviewed all studies on initial prophylaxis, and found most to be methodologically deficient. There is evidence to support the use of these agents to prevent acute dystonic reactions. Further work needs to focus on other types of extrapyramidal symptoms. In light of the inability to predict who will experience these side effects, the authors conclude that initial prophylaxis is beneficial for most patients who are starting neuroleptic medications.