Prozac 20 mg Capsule is a kind of antidepressant from the family of antidepressants termed SSRI or selective serotonin reuptake inhibitors. It treats different disorders such as panic disorder, bulimia nervosa, obsessive-compulsive disorder (OCD), premenstrual dysphoric disorder, and major depressive disorder. This serotonin reuptake inhibitor has the empirical formula C17H18F3NO•HCl and has a molecular weight of 345.79. Fluoxetine hydrochloride comes in white to an off-white crystalline form, having a solubility of 14 mg/mL in water.