Nutrical is a quick way to raise glucose level for finicky eaters. It is good for when you bring a puppy home, to make sure they dont go into, well, basically a diabetic like shock. Some other people on here will be able to tell you more, Im sure. You can buy it at most pet stores. Just a hint.... my local Petsmart has it for 7.99 in the store, but I think I only paid 3.99 from their website.....