Selective androgen receptor modulator

Selective androgen receptor modulators or SARMs are a novel class of androgen receptor ligands. (The name follows the terminology currently used for similar molecules targeting the estrogen receptor, 'selective estrogen receptor modulators,' such as tamoxifen.) Selective androgen receptor modulators or SARMs are a novel class of androgen receptor ligands. (The name follows the terminology currently used for similar molecules targeting the estrogen receptor, 'selective estrogen receptor modulators,' such as tamoxifen.) They are intended to have the same kind of effects as androgenic drugs but be much more selective in their action, allowing them to be used for more uses than the relatively limited legitimate uses of anabolic steroids. Currently used androgens for male hormone replacement therapy are typically injectable or skin delivery formulations of testosterone or testosterone esters. Injectable forms of testosterone esters (such as testosterone enanthate, propionate, or cypionate) produce undesirable fluctuations in testosterone blood levels, with overly high levels shortly after injection and overly low afterward. Skin patches do provide a better blood level profile of testosterone, but skin irritation and daily application still limit their usefulness.