Boldenone undecylenate is a derivative of testosterone with similar androgenic activity and higher mytrophic activity. Boldenone undecylenate does not convert into estrogens and does not have estrogen-related side effects. Instead, boldenone undecylenate is converted by 5-alpha-reductase into dihydroboldenone and some of it's androgenic effect mediated by dihydroboldenone.
Boldenone undecylenate increases overall body metabolism rate and increases appetite. Increase in lean body mass and low side effects make this anabolic/androgenic steroid (AAS) a good therapeutic choice for age-related non-genomic muscle degenerative diseases like sarcopenia. The undecylenate ester extends half-life of boldenone in circulation, which, depending on dose, is approximately seven days.