Test E 400 - Aaster Solutions

Testosterone enanthate appeared in the 1950s as a long-acting injectable form of testosterone, addressing the short duration of earlier esters like testosterone propionate. Its design enabled the hormone to be released gradually from intramuscular depots, reducing the need for frequent administration. Delatestryl, produced by Squibb, became the first major U.S. brand. The compound was quickly adopted for testosterone replacement therapy in men with hypogonadism. Its clinical use soon expanded to various hormonal and metabolic disorders.

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