Injectable steroids often include esters like cypionate and enanthate, which are attached to the testosterone molecule to extend its active life and increase oil solubility. These esters slow the hormones release, allowing for less frequent injections. Longer esters, like decanoate, extend release for weeks, while shorter ones, like acetate, release faster. For example, Deca Durabolin (Nandrolone Decanoate) can remain traceable for over a year, though its effects last for a shorter time. Esters make steroids oil-soluble and create a "depot" in muscle tissue, slowly releasing into the bloodstream. Breakdowns vary, with Decanoate taking up to a month, while Propionate and Acetate break down in days. Therefore, injection frequency depends on the ester’s breakdown time. Despite variations in ester chains, the ester doesn't alter the steroid’s effectiveness, it simply affects release timing. Some esters can cause irritation or swelling at the injection site, especially with smaller chains like propionate.
Llewellyn, W., 2008. Anabolics: Anabolic Steroid Reference Guide. 1st ed. William Llewellyn.
Hardcore, 2004. Complete Steroid Handbook: 2004 Edition. Compiled, edited and written by Hardcore.
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