Drools Vet Pro Gastrointestinal dry dog food . The sensitive stomach is the root cause of poor health of your dog. Dietary indiscretion or lack of digestive enzymes can affect your dog’s digestive health badly. High-calorie food and food insensitivity make digesting of food more difficult and lead to gastrointestinal problems. Vet-Pro Gastrointestinal Dog Food is specially formulated with wholesome ingredients to provide your dog with all the necessary nutrients while being easy on the stomach.