"tests on rats showed that at all doses, the drug rapidly causes cancers in a multitude of organs, including the liver, bladder, stomach, skin, thyroid, tongue, testes, ovaries and womb."
http://en.wikipedia.org/wiki/GW501516
Quick google and about the third result is
http://www.sarmreviews.com/gw-501516-cardarine/
@Kompute started
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http://en.wikipedia.org/wiki/GW501516