The antipsychotic drug fluphenazine has a prolonged period of action when it is given by intramuscular injection, but not when it is given by intravenous injection.Suggest why this is the case.
精神抑制药氟奋乃定，采用肌肉
射的话会有一段延迟的反应期，但是采用
射却没有，说
为
么会出现这种情
。
The antipsychotic drug fluphenazine has a prolonged period of action when it is given by intramuscular injection, but not when it is given by intravenous injection.Suggest why this is the case.
精神抑制药氟奋乃定，采用肌肉射的话会有一段延迟的反应期，但是采用射却没有，说为么会出现这种情。
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