LGD-3303 is a drug which acts as a
selective androgen receptor modulator (SARM), with good oral bioavailability. It is a selective agonist for the
androgen receptor, producing
functional selectivity with effective dissociation of
anabolic and
androgenic effects, acting as a partial agonist for androgenic effects, but a full agonist for anabolic effects.[1] It has been investigated as a possible treatment for
osteoporosis, and was shown in animal studies to enhance the effectiveness of a
bisphosphonate drug.[2]