The Lactulose the vet gave me for her is doing the trick and she is even throwing up a LOT less furballs. I've also been giving a little to Amy and it is helping her also with softer stools. I got online and looked this stuff up and I can get a 16 ounce bottle of it for half of what the vet charged me for only 2 or 3 ounces.... however, it probably would take me years to use that much. Geez, the markup they charge at the vets these days!! I may just call around to different vets and see what they would charge for a refill when I need one...