SuperTest 450 Blend is an illegal, black-market injectable anabolic-androgenic steroid (AAS). It contains a high concentration of 450 milligrams per milliliter (mg/ml) of a potent blend of several testosterone esters. This product is not approved for human medical use by any regulatory body and carries significant health and legal risks.
Composition
SuperTest 450 Blend typically contains a mix of both fast- and slow-acting testosterone esters, similar to Sustanon 250 but at a much higher concentration. While the exact formula can vary between illicit labs, it most commonly includes:
- Testosterone acetate: A very fast-acting ester.
- Testosterone propionate: Another fast-acting ester.
- Testosterone phenylpropionate: A medium-acting ester.
- Testosterone cypionate: A longer-acting ester.
- Testosterone decanoate: A very long-acting ester.
Intended use by bodybuilders
Users of SuperTest 450 Blend seek rapid and substantial gains in muscle mass, strength, and overall performance. The mix of esters is designed to provide both a quick initial boost in testosterone levels and a sustained anabolic effect over an extended period. The high concentration (450 mg/ml) is appealing to users who want a high dose in a smaller volume of liquid.
Health risks
As a black-market product, SuperTest 450 Blend is made in unregulated conditions, and its purity, sterility, and even the accuracy of its dosage are not guaranteed. The use of such high-dose testosterone can lead to numerous severe side effects, including:
- Cardiovascular damage: Increased risk of high blood pressure, elevated cholesterol, heart attack, stroke, and blood clots.
- Hormonal dysfunction: Suppression of natural testosterone production, which can result in infertility, testicular shrinkage, and gynecomastia (male breast development).
- Severe mood changes: Increased aggression (“roid rage”), paranoia, anxiety, and depression.
- Androgenic effects: Severe acne, oily skin, and accelerated male-pattern hair loss.
- Other risks: Severe liver and kidney damage, fluid retention, and potentially life-threatening infections from non-sterile injection practices.
- Virilization in women: Irreversible masculine features, such as a deepened voice and clitoral enlargement.





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