Being 6'5" and a power 275lbs, mass gaining has never been too much of an issue, but this stuff has definitely given me noticeably better results than any of the other non dairy options have. I'm lethally allergic to dairy products, so having a protein gainer (more a meal replacement more than anything) that is meat based and not plant has been awesome. Just make sure you get a large container to make the shake in. The 4 scoops fills an average container without milk. Much love from the midwest, home of the beef.