Atypical antipsychotic
atypical antipsychotics (AAP), also known as second generation antipsychotics (SGAs) and serotonin–dopamine antagonists (SDAs), are a group of antipsychotic drugs (also generally known as tranquilizers and neuroleptics) used to treat psychiatric conditions. Largely introduced after the 1970s, most are approved for schizophrenia, with some having received additional approval for bipolar disorder, irritability in autism, and as an adjunct in major depressive disorder.