Testosterone Cypionate is an injectable form of testosterone, a naturally occurring male hormone. It is prescribed to treat low testosterone levels (hypogonadism) in adult men, helping to restore normal hormone balance when the body doesn't produce enough on its own.

By supplementing testosterone, this medication can help improve energy levels, mood, muscle strength, libido, sexual function, bone density, and overall sense of well-being in men experiencing symptoms of low testosterone such as fatigue, reduced sex drive, mood changes, or decreased muscle mass.

It is administered as a slow, deep injection into a muscle (usually the buttock), typically every 2–4 weeks, with the exact dose and schedule personalized by your doctor based on your blood test results and response to treatment.