Test-C 250 is a black-market injectable anabolic-androgenic steroid (AAS) that contains testosterone cypionate at a concentration of 250 milligrams per milliliter (mg/ml). It is important to distinguish between this illicit product and the legal, prescription testosterone cypionate (brand name Depo-Testosterone) that is used under strict medical supervision.
Active substance
- Testosterone cypionate: This is a long-acting ester of the male sex hormone testosterone.
- Medical purpose: Medically, it is FDA-approved for treating males with abnormally low testosterone levels (hypogonadism).
- Black-market difference: While the active ingredient is the same as the pharmaceutical version, the black-market Test-C 250 is produced without regulation and is often used by bodybuilders at much higher doses for performance enhancement.
Legal status and dangers
- Illegal and unregulated: Because it is not prescribed by a doctor, Test-C 250 is illegal to possess and use in many countries. Illicit products are not subject to quality control, so their purity, sterility, and actual concentration are unknown.
- Banned in sports: Testosterone cypionate is banned by the World Anti-Doping Agency (WADA) and other major sports organizations.
- Misuse risks: Misusing testosterone, especially in high doses, carries serious health risks, including heart and liver problems.
Significant health risks
The use of unregulated Test-C 250 is associated with numerous and potentially life-threatening side effects, which are significantly more pronounced at high, non-medical doses.
Cardiovascular
- High blood pressure
- High cholesterol
- Increased risk of heart attack, stroke, and blood clots
Hormonal
- Suppression of the body’s natural testosterone production, which can cause testicular shrinkage and infertility.
- Gynecomastia (male breast development)
Psychological
- Severe mood swings and increased aggression (“roid rage”)
- Paranoia, anxiety, and depression
Other physical effects
- Androgenic effects: Severe acne, oily skin, and accelerated male-pattern baldness.
- Liver damage: High doses can potentially cause liver problems, including liver cancer.
- Fluid retention (Edema): The body can hold onto excess salt and water, causing swelling.
- Injection site issues: The lack of sterile conditions can lead to pain, inflammation, and infection at the injection site.





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