Testosterone base and suspension - Page 3

First developed in the 1930s, testosterone base is one of the oldest anabolic steroids still in use today. It contains non-esterified testosterone in a water-based formulation, though oil suspensions are also possible. Because there is no ester to slow its release, testosterone suspension acts quickly after injection, leading to rapid increases in muscle mass and strength. The quick action of the drug is often accompanied by water retention, making it more suitable for bulking phases. Frequent injections, usually on a daily basis, are required due to its short half-life​​.

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