The author believes a lack of understanding of drug therapy fuels extreme perceptions about Prozac & that knowing its mechanics can demystify its powers while generating respect for its complexity & efficacy. Prozac is considered a breakthrough drug for treating depression, bulimia & obsessive-compulsive disorder. The article discusses Prozac pharmacodynamics, pharmacokinetics & psychopharmacology in common termionology; side effects; & use by pregnant or breastfeeding mothers.