Health Conditions
Feeding a Dog With a Sensitive Stomach
AlphaPak · Reviewed by our veterinary and formulation team · Updated August 2, 2026
A dog with ongoing loose stools needs a diagnosis before a new food. Here is the hopeful part: long-running gut trouble in dogs very often gets better with a change of diet. When food is the answer, the change itself does much of the work. How well the food digests, and how few things are in it, matter more than any label.

What does "sensitive stomach" actually mean?
It is a description of a pattern, not a diagnosis. That distinction matters, because the same pattern has very different causes. Loose stools, an unsettled gut, intermittent vomiting, gurgling, and gas can all come from intestinal parasites, an adverse food reaction, chronic inflammatory gut disease, pancreatic problems, or simply a dog who eats things on walks.
Some of those are fixed with a cheap dewormer. Some need long-term management. Only one of them is fixed by a different bag of food, and you cannot tell which you are dealing with by trying foods until something sticks.
Why diet is worth taking seriously here
Chronic digestive disease in dogs is unusual among long-term conditions in how often food alone is the answer. In referral populations, roughly half of dogs with chronic enteropathy respond to a diet change alone (Tolbert et al., 2022), and longer follow-up puts the food-responsive share higher still once dogs are reclassified over a year.
The more surprising finding is which diet. In a randomized, blinded, controlled trial of 31 dogs with chronic enteropathy, 83% of the non-protein-losing cases responded to their initial diet, and there was no difference between the hydrolysed diet and the non-hydrolysed limited-ingredient one. Every dog that responded and was followed to 26 weeks stayed in remission. The authors' conclusion was that changing the diet, independent of antigen restriction or supplemental ingredients, induced long-term remission (Simpson et al., 2023).
That is a genuinely useful thing for an owner to know. It means the specific technology on the label may matter less than the fact of a clean, consistent change, made properly and given long enough to work.
What digestibility means, and what the numbers actually are
Digestibility is the share of a nutrient a dog absorbs rather than passes through. Higher digestibility means more of the meal is used and less arrives in the colon to be fermented, which is where a lot of gas and loose stool comes from.
Researchers fed ten dogs five different foods in a crossover design, so every dog ate every diet:
| Food format | Protein absorbed | Daily stool output |
|---|---|---|
| Extruded kibble | 82.0% | 90.2 g |
| Fresh (lightly cooked) | 85.9% | – |
| Frozen raw | 93.0% | – |
| Freeze-dried raw | 94.2% | 39.8 g |
Where AlphaPak fits for a sensitive stomach
This is the lane our Chicken recipe was built for. The evidence above says what a chronically unsettled gut responds to is a clean, genuinely different, consistently fed diet. That is a fair description of what is in our bag.
It is a short list of whole foods, every one of them named, with nothing synthetic and nothing there to bulk it out. It is minimally processed: freeze-dried rather than cooked at high heat and extruded. Freeze-dried raw performed well on protein digestibility in the study above, meaning more of the meal is absorbed in the small intestine and less arrives in the colon to ferment, which is where a lot of gas and loose stool comes from. And the Chicken recipe includes pumpkin, long used for settling a dog's gut.
If your vet wants a clean diet change to a food with few, clearly named ingredients, we are a strong candidate.
Where we are not the answer:
- It is not a low-fat food. Chicken works out to roughly 57 g of fat per 1,000 calories and Beef to about 62. A veterinary low-fat gastrointestinal diet sits under 35. For dogs with protein-losing intestinal disease, intestinal lymphangiectasia, or repeated pancreatitis, fat restriction is the actual treatment and we are the wrong direction.
- It is not high in fiber. Some large-bowel problems respond to added fiber, and our recipes are not built that way.
- Our two recipes are not a second chance at a fresh start. They share flaxseed, apple, green bean, carrot, broccoli, sweet potato, and beef bone meal. A dog who did not do well on our Chicken has not had a genuinely new diet by moving to our Beef.
- There is no added vitamin and mineral premix. For a dog who is not absorbing nutrients well, that is worth raising with your vet.
If your dog's stomach upset came on suddenly
This page is about the ongoing kind. A dog who is suddenly vomiting and having diarrhea is a different situation and should not be managed with a food change from a website.
Sudden gastroenteritis is usually handled with a highly digestible, low-fat diet for a short stretch, and a rich or fatty meal is the wrong thing at that moment. Given the numbers above, that includes ours. More importantly, the signs of a simple upset stomach overlap with things that are not simple at all: pancreatitis, a swallowed foreign object, a toxin, parvovirus in an unvaccinated dog, and haemorrhagic gastroenteritis. Repeated vomiting, blood, a painful belly, lethargy, or a dog who cannot keep water down means a vet the same day.
Making a diet change count
If you and your vet decide to try a new food, give the trial a fair chance:
- Change one thing. New food only: no new treats, chews, or supplements at the same time.
- Transition over one to two weeks, mixing a little more in each day. See our transition guide.
- Give it long enough. Several weeks, not several days. Judging a food after four days of loose stools during the changeover tells you nothing.
- Write it down. Stool quality, appetite, energy, weight. Memory is unreliable and your vet will want the detail.
- Go back to your vet if there is no improvement, or if things get worse at any point.
Common questions
- What causes a sensitive stomach in dogs?
- It is a description, not a diagnosis. The same signs (loose stools, gurgling, intermittent vomiting, gas) can come from parasites, food reactions, chronic inflammatory gut disease, pancreatic problems, or something the dog keeps finding on walks. That is why the first step is a vet working out which one it is, rather than a new bag of food.
- Does a diet change really help dogs with chronic digestive problems?
- Often, yes. In a randomized controlled trial of dogs with chronic enteropathy, 83% of the non-protein-losing cases responded to their initial diet, and there was no difference between a hydrolysed diet and a non-hydrolysed limited-ingredient one. The authors concluded that changing the diet, independent of the specific antigen restriction, induced long-term remission (Simpson et al., 2023).
- Is freeze-dried raw easier for dogs to digest than kibble?
- In one crossover study of ten dogs fed five different foods, protein digestibility ran 90 to 94% for the raw and freeze-dried raw diets compared with about 82% for extruded kibble (Geary et al., 2024). Worth knowing: that study was funded by a raw pet food company, and the diets differed in ingredients as well as format, so the numbers reflect both.
- Is high-fat food bad for a dog with a sensitive stomach?
- It can be. Dogs with protein-losing intestinal disease, intestinal lymphangiectasia, or a history of repeated pancreatitis are usually put on a genuinely low-fat diet, and AlphaPak is not one. Both recipes sit in the moderate-to-higher fat range. If your dog is in any of those groups, your vet's low-fat recommendation should win.
- Should I feed my dog a bland diet for an upset stomach?
- For a sudden bout of vomiting and diarrhea, follow your vet's advice rather than a general guide. Acute gastroenteritis is usually managed with a highly digestible, low-fat diet for a short period, and a rich or fatty meal is the wrong thing at that moment. Ongoing or severe signs need a vet, not a food swap.
Sources
- Simpson, K. W., Miller, M. L., Loftus, J. P., Rishniw, M., et al. (2023). Randomized controlled trial of hydrolyzed fish diets in dogs with chronic enteropathy. Journal of Veterinary Internal Medicine. DOI: 10.1111/jvim.16846
- Geary, E. L., Oba, P. M., Templeman, J. R., & Swanson, K. S. (2024). Apparent total tract nutrient digestibility of frozen raw, freeze-dried raw, fresh, and extruded dog foods and their effects on serum metabolites and fecal characteristics, metabolites, and microbiota of healthy adult dogs. Translational Animal Science. DOI: 10.1093/tas/txae163
- Tolbert, M. K., Murphy, M., Gaylord, L., & Witzel-Rollins, A. (2022). Dietary management of chronic enteropathy in dogs. Journal of Small Animal Practice. DOI: 10.1111/jsap.13471
AlphaPak is a food, not a medicine. Our products are not intended to diagnose, treat, cure, or prevent any disease. Statements about nutrition describe the role of whole-food ingredients in supporting normal health and are not a substitute for veterinary care. Individual results vary.