Fluoxetine and extrapyramidal side effects
Abstract
OBJECTIVE: The authors' goal was to determine whether fluoxetine is associated with extrapyramidal side effects. METHOD: They assessed the notifications of extrapyramidal manifestations in patients given fluoxetine in the New Zealand Intensive Medicines Monitoring Programme, a national system that monitored adverse reactions associated with fluoxetine over a 4-year period, and determined whether these adverse reactions were causally related to fluoxetine. RESULTS: In reports of adverse reactions in 5,555 patients given fluoxetine throughout New Zealand, there were 15 notifications of extrapyramidal events probably or possibly caused by fluoxetine. Fluoxetine was the only psychotropic agent used for seven of the 15 patients; two patients were also taking lithium, four were taking neuroleptics, two were taking tricyclic antidepressants, and one was taking metoclopramide. CONCLUSIONS: The authors conclude that fluoxetine may be associated with extrapyramidal reactions. These may occur with fluoxetine alone or fluoxetine may facilitate the reaction in patients receiving psychotropic medication or dopamine receptor blocking drugs.
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