I have a 19-year-old cat who has stomach problems. For the past year I have given him Daily Enzymes & Prebiotics alternating with IntelliFlora. Not only has this combination helped his stomach, his overall health seems to have improved. These products are both affordable and I would recommend them to anyone. I also use FortiFlora but have actually found these other 2 products work better for him. Thanks for the great products and price PetBucket!