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Antipsychotics
medication Under reviewAntipsychotics are a broad class of prescription psychoactive drugs primarily developed to treat severe mental illnesses such as schizophrenia, schizoaffective disorder, bipolar disorder with psychosis, and other psychotic conditions. They are not nutritional supplements and are generally reserved for diagnosed psychiatric disorders under medical supervision. Antipsychotics are often divided into first-generation (typical) and second- or third-generation (atypical) agents, which differ in receptor profiles and side-effect patterns. Most antipsychotics work by modulating dopamine signaling in the brain, particularly through antagonism or partial agonism at dopamine D2 and D3 receptors. Many atypical antipsychotics also act on serotonin receptors and other neurotransmitter systems. By dampening dopaminergic transmission in specific pathways, they reduce positive psychotic symptoms such as hallucinations and delusions, but this same mechanism can affect motivation, reward processing, and certain aspects of cognition. In healthy individuals without psychosis, antipsychotics do not provide health benefits and are associated with cognitive, metabolic, and neurological side effects.
Research summary
Controlled studies in healthy human volunteers show that short-term antipsychotic exposure can impair specific aspects of cognitive performance rather than enhance it. For example, sustained administration of dopamine D2/D3 antagonists or partial agonists for one week in healthy adults has been shown to slow visuospatial working memory performance without producing global sedation or motor slowing, indicating a targeted cognitive cost rather than a generalized performance decline. The broader clinical literature in patients with psychotic disorders consistently demonstrates that antipsychotics reduce psychotic symptoms and relapse risk and modestly improve quality of life and overall functioning over the short to medium term. However, these benefits are disease-specific and do not translate into advantages for healthy individuals. In people without psychosis, the risk–benefit balance is unfavorable, with potential for metabolic, neurological, and cognitive adverse effects and no validated performance or longevity benefits.
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