LadyJane has her dog Cookie on a home cooked diet for lymphangiectasia. I would recommend you consult with a board certified veterinary nutritionist for other options if you do not wish to feed the hill's. I have worked with Dr Rebecca Remillard for several years for my dogs, her website is
PetDiets - VNC putting pets' health first!. Or you can check out
American College of Veterinary Nutrition to locate other board certified veterinary nutritionists. Is your dog in the care of a board certified internal medicine specialist? If no, the dog should be.