Testosterone Undecanoate (Andriol)

Testosterone Undecanoate (Andriol) is an oral anabolic-androgenic steroid formulation that delivers the natural hormone testosterone. In bodybuilding, testosterone is traditionally associated with muscle mass development, strength training and both bulking and cutting phases, depending on individual physique goals.

Unlike most oral anabolic steroids, Testosterone Undecanoate is not a 17-alpha-alkylated compound. Its oral formulation is designed to promote absorption through the intestinal lymphatic system, partially bypassing first-pass liver metabolism. Once absorbed, the undecanoate ester is cleaved to release testosterone, which produces the same fundamental androgenic and anabolic effects as testosterone delivered through injectable formulations. This category includes oral Testosterone Undecanoate products, while injectable testosterone esters are listed separately.