Hated that stuff! I'd rather do a 12 week, balls to the wall diet, than to try again to endure even ONE day of sweating my ass off on 600mgs/day of DNP. I lost ZERO weight too, which made it a complete loss. I admit that I wasn't dieting at all at the time. However, the first couple of times I ever used Clen(Novegam), and ECA, I wasn't dieting either, and lost a TON of fat. In my opinion, a fat burner is tested in its' ability to burn fat without the benefit of diet, at least during the first few initial usages. With DNP, I lost nothing, and it performed NOTHING like that. I was disappointed, but perhaps I expected the drug to act in a way in which it is not desined to operate. Either way, I wouldn't use it again, even if it were free.