GW-1516 has been banned for professional use due to the advantage it provides to endurance athletes.
It takes effect very quickly and the results can be staggering.
The second common use for GW-1516 is that of fat loss. Many users turn to GW-1516 as it has shown to melt off fat while still being non-catabolic proving to still hold on to muscle while losing fat.
**Disclaimer- SARMs (Selective Androgen Receptor Modifiers) may not be approved for use in professional athletics- please check with your organization prior to taking any substance that is not NSF certified**