Are you talking about LGD-4033 or LGD-3303?
I know 3303 is sometimes called 3033 by mistake, but that makes it easy to mistake for 4033 like JP probably did.
LGD-4033 is Ligandrol which is very commonly used
LGD-3303 is a new SARM.
Dylan's answer is directed towards 3303, NOT Ligandrol.