The FDA recently approved the monoamine oxidase inhibitor (MAOI) selegiline in a transdermal (patch) formulation (Emsam - Bristol-Myers Squibb/Somerset) for treatment of major depressive disorder. Selegiline is also available in an oral formulation (Eldepryl, and others) for treatment of Parkinson's disease.

Urofollitropin (Metrodin - Serono), a human gonadotropin, is the latest drug to be approved by the US Food and Drug Administration (FDA) for induction of ovulation in various clinical situations, including in vitro fertilization (IVF).

Sibutramine hydrochlorid monohydreate (Meridia - Knoll), which is structurally related to amphetamine, has been approved by the FDA for treatment of obesity. It is classified by the Drug Enforcement Agency (DEA) as a schedule IV controlled substance.

The FDA has approved the atypical antipsychotic pimavanserin (Nuplazid – Acadia) for treatment of hallucinations and delusions associated with Parkinson's disease. It is the first drug to be approved in the US for this indication.

View the Expanded Table: Some Drugs for Smoking Cessation

Many drugs can cause psychiatric symptoms, but a causal connection is often difficult to establish. Psychiatric symptoms that emerge during drug treatment could also be due to the underlying illness, previously unrecognized psychopathology, or psychosocial factors. The withdrawal of some drugs can cause symptoms such as anxiety, psychosis, delirium, agitation or depression.

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Risperidone (Risperdal - Janssen), a benzisoxazole derivative, is now available in the USA for treatment of schizophrenia and other psychotic disorders.

Xywav (Jazz), an oral solution that contains calcium, magnesium, potassium, and sodium oxybates, has been approved by the FDA for treatment of idiopathic hypersomnia in adults. It is the first drug to be approved in the US for this indication. Xywav was approved in 2020 for treatment of excessive daytime sleepiness or cataplexy in patients ≥7 years old with narcolepsy. It contains about 92% less sodium than sodium oxybate oral solution (Xyrem), which has been available in the US for years for use in patients ≥7 years old with narcolepsy.

Quetiapine (Seroquel - Zeneca), a dibenzothiazepine derivative, has been approved by the FDA for treatment of schizophrenia and other psychotic disorders. It is a new addition to the 'atypical' antipsychotics, which include olanzapine (Zyprexa - Medical Letter, 39:5, 1997), risperidone (Risperdal) and clozapine (Clozaril). Atypical antipsychotic drugs generally are less likely to cause extrapyramidal symptoms than older drugs such as haloperidol (Haldol, and others) or the phenothiazines.

The FDA has approved lurasidone (Latuda - Sunovion), a new second-generation antipsychotic, for oral treatment of schizophrenia in adults.