Buy MK2866 Online. Ostarine or MK-2866 is a SARM popular with bodybuilders and athletes, highly effective in light muscle gains. Selective androgen receptor modulators, or SARMs, are a new class of androgen receptor ligands.
They have the same effects as androgenic drugs, but are much more selective in their action, enabling them to be put to more uses than the relatively limited legitimate uses of anabolic steroids.