It uses Hydrolyzed Beef Protein which is on the label. Because I work for another supplement company, I cannot comment on the product but you should look it up and see what it means
As uberman said, I also call bullshit on working for a competing brand.
In any case, the hydrolyzed protein is not the first ingredient on the label. ripitup said something
about beef
liver, but didn't come back to confirm. The label certainly doesn't mention liver, at least I didn't see it.
Whatever the case, this is deceptive marketing. I believe this company was sued and settled a lawsuit over another product, Arimatest, over fraudulent advertising, so they have history of BS marketing.