I had about a 4lb gain, along with extreme tiredness and sweating over a 10 day run. The question is how much of that was lean mass, well some of it but not all. I didn't get a hydro test to be sure. So was it real.....your guess is as good as mine, it was something but I can't for sure say it was folli. I can say all other products from the company I used have been real and they were nice enough to provide labs on them but I believe the folli came from a different supplier.