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Published Online:https://doi.org/10.1176/ajp.121.8.784

The injection of fluphenazine decanoate, a new long acting antipsychotic drug, resulted in rapid improvement in 9 of 12 chronic schizophrenic patients. The length of response following a single injection ranged from 7-39 days, with a mean length of activity of 16-22 days. This drug promises to be useful in the treatment of psychosis for economic reasons as well as its rapid action, its efficacy and its long action.

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