ANTIPSYCHOTIC MEDICATIONS is a topic covered in the Harrison's Manual of Medicine.

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Harrison’s Manual of Medicine

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These include the first-generation (typical) neuroleptics, which act by blocking dopamine D2 receptors, and the second-generation (atypical) neuroleptics, which act on dopamine, serotonin, and other neurotransmitter systems. Some antipsychotic effect may occur within hours or days of initiating treatment, but full effects usually require 6 weeks to several months of daily, therapeutic dosing.

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