I've heard of this as well...and for the OP, it's spelled Pedialyte in case you try to find it. Supposedly, along with hydrating the animal, the nutrients it contains will help kick in their feeding response or make them hungry. I was told to put some in their water dish so when they drink they also get the Pedialyte. I've never personally tried it so I'm not sure how well it works, if at all, but like Neal said, it's worth a shot...