I used Farnam Weight Builder recently with my horse, and he LOVES IT. I do too (: At first I had him on 2 scoops a day (1 with morning grain, 1 with evening) and he filled out quite a bit. But he still needed more, so I started giving him 2 scoops in the evening, and he filled out perfectly (: Still a little ribby, But I upped his hay ration (I was going to do that anyways because it's getting cold..) and it's definitely helping. I saw the most difference in his hip area. Before I used Farnam, his ribs showed..eh not too bad, but you could see em. And his hips...You could see those a little more than you wanted to. But after I had him on it for about 1 month, you can't see his ribs as much, and his hips are ''normal''...They don't poke out anymore. (: I highly recommend Farnam Weight Builder.