Prozac (fluoxetine) is a selective serotonin reuptake inhibitor (SSRI) antidepressant. Fluoxetine affects chemicals in the brain that may be unbalanced in people with depression, panic, anxiety, or obsessive-compulsive symptoms. How to use Prozac. Read the Medication Guide provided by your pharmacist before you start using fluoxetine and each time you get a refill. If you have any questions, ask your doctor or pharmacist. Defines the medication fluoxetine (Prozac, Sarafem, Prozac Weekly) a drug used in the treatment of depression, obsessive-compulsive disorders, panic attacks, and premenstrual dysphoric disorder. Article includes descriptions, uses, drug interactions, and side effects. Fluoxetine (Prozac) is an inexpensive drug used to treat mood problems such as depression, obsessive compulsive disorder, and panic attacks. It can also treat certain eating disorders. For the treatment of depression or OCD, the recommended starting Prozac dosage is 20 mg once a day. This eMedTV segment also provides dosing guidelines for bulimia and panic disorder treatment and offers tips for those taking the antidepressant. Prozac and Lexapro are each available as generic drugs. In general, generic drugs cost less than their brand-name counterparts. Most health insurance companies cover both drugs. Prozac is the brand name of fluoxetine, a prescription drug used to treat depression. This antidepressant is in a class of drugs known as selective serotonin reuptake inhibitors, or SSRIs. Xanax vs Prozac. Psychiatric medications are one of the most popular in relieving the symptoms being experienced by almost all of the population, such as depression and anxiety. Prozac is a type of antidepressant called a selective serotonin reuptake inhibitor used for treating depression, bulimia, obsessive-compulsive disorder , panic disorder, and premenstrual dysphoric disorder. Prozac is available in generic form. Hi. I used to take lexapro at night because that worked best for me. When I was switched to fluoxetine I started out taking it in the morning but never felt like I was awake during the day- on the edge of falling asleep all day.