Testosterone Cypionate is a synthetic form of the male sex hormone testosterone, commonly used in hormone replacement therapy for men with low testosterone levels. This medication, available under various brand names such as Duratest and Depo-Testosterone, is administered via injection and is classified as a schedule-III controlled substance in the United States, requiring a prescription and medical supervision. While it offers significant benefits in restoring testosterone levels, it also carries potential side effects such as soreness at the injection site, mood changes, and more serious health risks if misused for performance enhancement. Understanding the therapeutic advantages and risks of Testosterone Cypionate is crucial for safe and effective treatment.