Learn the typical dosages of fluoxetine (Prozac) for depression, OCD, and panic disorder. Find details on available strengths (10mg, 20mg, 40mg), daily timing, and what to do if you miss a dose. Find patient medical information for Fluoxetine (Prozac, Sarafem, others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings In the controlled clinical trials of fluoxetine supporting its effectiveness in the treatment of OCD, patients were administered fixed daily doses of 20, 40, or 60 mg of fluoxetine or placebo. Fluoxetine, sold under the brand name Prozac, among others, is an antidepressant medication of the selective serotonin reuptake inhibitor (SSRI) class [2] used for the treatment of major depressive disorder, anxiety, obsessive–compulsive disorder (OCD), panic disorder, premenstrual dysphoric disorder, and bulimia nervosa. [2] Fluoxetine is an antidepressant and belongs to a group of medicines known as selective serotonin reuptake inhibitors (SSRIs). This medicine works by increasing the activity of a chemical called serotonin in the brain. About this medication FLUOXETINE (floo OX e teen) treats depression, anxiety, obsessive-compulsive disorder (OCD), and eating disorders. It increases the amount of serotonin in the brain, a substance that helps regulate mood. It belongs to a group of medications called SSRIs. Two 6-week controlled studies (N=671, randomized) comparing fluoxetine 20 mg and placebo have shown fluoxetine 20 mg daily to be effective in the treatment of elderly patients (≥60 years of age) with Major Depressive Disorder. Fluoxetine is an oral drug that is used primarily for treating depression. Fluoxetine is also used to treat depression, bulimia, obsessive-compulsive disorder (OCD), panic disorder, and premenstrual dysphoric disorder (PMDD). Prozac is a selective serotonin reuptake inhibitor (SSRI) antidepressant. Fluoxetine affects certain chemical messengers (neurotransmitters) that communicate between brain cells and helps people with depression, panic, anxiety, or obsessive-compulsive symptoms. Fluoxetine (Prozac) is a prescription antidepressant used to treat depression, OCD, bulimia, panic disorder, and PMDD. Learn about uses, dosage, side effects, and warnings.