If you use it to sleep and not party - then you will get extremely deep sleep which is great for building muscle. Also when your asleep on it your body ups the amount of GH by quite a bit.
On the other hand it increases prolactin.
If taken with Alcohol it poisons your liver by sending all the Alcohol there and will probably make you sick (not good if your passed out).

Overated as a party drug IMO and makes you stupid.
Probably hyped as a great bodybuilding drug by same stupid people.

Dont waste your time IMO
I did the experiments so you dont have to!! lol