Pfizer’s testosterone cypionate is marketed in the U.S. as Depo-Testosterone. It’s a long-acting injectable form of testosterone used for testosterone replacement therapy in men with hypogonadism.
Quick overview:
- Active ingredient: testosterone cypionate
- Formulation: oil-based injectable
- Big picture use: treats low testosterone in adult men (hypogonadism)
- How it’s given: intramuscular injection, usually by a clinician
- Typical dosing: individualized; common regimens are in the range of 50–400 mg every 2–4 weeks, or 100–200 mg every 2 weeks, depending on testosterone levels and symptoms
Important safety and notes:
- Not for women, children, or for use in breast or prostate cancer patients unless advised by a clinician
- Common side effects: acne, oily skin, fluid retention, sleep apnea worsening, breast tenderness or enlargement, mood changes
- Serious risks: increased red blood cell count (polycythemia), worsening of prostate conditions, potential cardiovascular effects
- Interactions: can interact with anticoagulants, insulin or other diabetes meds, and some drugs that affect liver enzymes
- Must be prescribed and monitored by a healthcare provider (blood tests to check testosterone level, hematocrit, lipids, etc.)
If you’re asking about a specific country, dosing schedule, or how it compares to testosterone enanthate (the other common injectable form), tell me and I can tailor the info. Also, if you’re considering this therapy, please consult your clinician to discuss appropriateness, dosing, monitoring, and safety.