Fluoxetine hydrochloride, also known by its trade name Prozac, is an antidepressant medication. It is used to treat a variety of mental illnesses, including depression, obsessive-compulsive disorder, panic disorder, and others. Fluoxetine is one of a group of antidepressants called selective serotonin reuptake inhibitors (SSRIs).
There are newer drugs available to treat these conditions. Nevertheless, fluoxetine remains very popular. Over 23.1 million prescriptions were filled in the United States in 2006. This makes it the third most prescribed antidepressant.[1]