Quetiapine
Quetiapine, marketed as Seroquel, is an atypical antipsychotic approved for the treatment of schizophrenia, bipolar disorder, and along with an antidepressant to treat major depressive disorder. It is also sometimes used as a sleep aid because of its sedating effect but this use is not recommended.
Annual sales are approximately $1.3 billion worldwide. Quetiapine was developed by AstraZeneca from 1992 to 1996. It was first approved by the FDA in 1997. There are now several generic versions.
Medical uses
Quetiapine is primarily used to treat schizophrenia or bipolar disorder.
Schizophrenia
A second Cochrane Review comparing quetiapine to typical antipsychotics concluded that quetiapine
Has efficacy against positive symptoms that appears no better than typical antipsychotics, but might be more efficacious for negative symptoms.
Has discontinuation rates similar to those of typical antipsychotics, but fewer of these discontinuations were due to adverse events.
Produces fewer side effects, particularly movement related side effects.