Pet Health
· Updated March 04, 2026· 7 min read

How to Help Your Dog's Sensitive Stomach: Diet, Probiotics, and More

✓ Vet-Reviewed Content
Vetnique Team
Written by Vetnique Team
Dr. James Bascharon
Reviewed by Dr. James Bascharon, DVMGeneral Practice
Last medically reviewed: March 04, 2026
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- Signs of a sensitive stomach in dogs include loose or runny stools, excessive gas, poor appetite, dull coat, poor overall health, and house accidents
- See your veterinarian immediately if you notice blood in stool, vomiting more than once, an unsettled stomach lasting three or more days, unplanned weight loss, lethargy, mucus or black or grey stools, or signs of abdominal pain
- When changing your dog's food, always transition gradually over the course of a week — start with three-quarters old food and one-quarter new, then slowly adjust the ratio until the transition is complete
- Probiotics can support a dog's digestive system by bolstering the natural population of beneficial bacteria, which compete with harmful bacteria for nutrients and block pathogen attachment points
- An elimination diet — limiting ingredients and testing new additions one at a time over 10 to 12 weeks — can help identify specific food triggers, but should always be done under veterinary guidance
- Common food sensitivities in dogs include beef, lamb, chicken, turkey, milk products, eggs, soy, fish, and carbohydrates like rice and potato

Some dogs have digestive systems that are more sensitive than others. Just like people, not every dog digests every type of food well. A food that works perfectly for one dog may cause gas, loose stools, or general discomfort in another. Understanding the signs of a sensitive stomach, knowing when to see the veterinarian, and exploring dietary strategies can help you find the right approach for your dog.

Signs of a Sensitive Stomach

There are several indicators that your dog's digestive system may need extra support. Common signs include loose or runny stools, excessive gas, poor appetite, a dull coat, poor overall health, and house accidents. These symptoms often appear after a change in food or when a dog is eating something that does not agree with them.

Dog looking unwell with a sensitive stomach

Can Sensitive Digestion Be a Sign of Something Else?

Yes. Digestive issues can sometimes indicate an underlying health problem. Dogs are natural scavengers and may have eaten something they should not have. If you are concerned about your dog's digestion, it is always a good idea to visit your veterinarian for a checkup to rule out more serious causes.

When to See the Veterinarian Immediately

Certain signs should not be ignored. See your veterinarian as soon as possible if your dog has blood in their stool, vomits more than once, has an unsettled stomach for three or more days, experiences unplanned weight loss, shows lethargy or has no energy, passes stools containing mucus or that appear black or grey, or shows signs of abdominal pain such as sensitivity when their stomach is touched or guarding of the abdomen area. A veterinary visit can rule out serious underlying conditions and give you confidence to focus on dietary management.

How to Soothe a Sensitive Stomach

There is no single solution for every dog with sensitive digestion. However, several approaches can help you identify and manage the problem.

Transition food gradually. When changing your dog's food, always do it slowly over the course of a week. Start with three-quarters old food and one-quarter new food, then gradually adjust the ratio until the transition is complete. Abrupt changes are one of the most common causes of digestive upset.

Try a veterinary diet. Your veterinarian likely carries specialized diets formulated for dogs prone to food intolerances. These can be a good starting point if you are not sure what your dog is reacting to.

Check your treats. Treats, chews, and table scraps can contain ingredients that upset sensitive dogs. Check ingredient labels carefully and choose treats with ingredients similar to your dog's chosen diet. Using kibble from your dog's regular food as treats is another safe option.

Consider probiotics. Digestive issues can be caused by difficulty breaking down food, diet changes, stress, and scavenging. A probiotic supplement can support the digestive system through these challenges. Glandex Probiotic & Prebiotic Soft Chews are formulated with beneficial probiotic strains and prebiotics to support complete gut health.

How Probiotics Help Dogs With Sensitive Stomachs

A good digestive health supplement bolsters the natural population of beneficial bacteria in your dog's digestive system. These beneficial bacteria compete with harmful bacteria for nutrients and block the points where pathogens try to attach to the gut lining. Prebiotics — a special type of dietary fiber — work alongside probiotics by feeding and supporting the beneficial bacteria, helping them thrive.

Dog eating food with digestive support

How Elimination Diets Work

An elimination diet is a method for discovering which specific foods trigger your dog's stomach issues. It works by limiting the ingredients in your dog's food to a minimal number, then introducing new additions one at a time over 10 to 12 weeks while monitoring your dog's reaction. By isolating individual ingredients, you can identify what causes problems and what does not.

If you are considering an elimination diet, consult your veterinarian before you begin. They can advise on the right plan for your dog, suggest alternatives if your initial approach is not appropriate, and monitor your dog's health throughout the process. Once you identify the triggers, your veterinarian or a qualified veterinary nutritionist can help you find diets that avoid those ingredients while providing complete nutrition.

Common Food Sensitivities in Dogs

Food sensitivities are highly individual, but certain ingredients are more common triggers than others. Foods that frequently cause issues include beef and lamb, chicken and turkey, milk and milk products, eggs, soy, fish, certain vegetables, and carbohydrates like rice and potato. Some dogs are also sensitive to novel proteins — proteins not commonly found in commercial pet food, such as rabbit and venison.

Alternative Diets for Dogs With Sensitive Stomachs

If commercial pet food is not working for your dog, there are other options to explore with your veterinarian's guidance.

Homemade food. It is possible to prepare your own dog food, provided you ensure your dog receives the right balance of protein from meat or fish, fiber from carbohydrates, fats and fatty acids, vitamins and minerals, and adequate water for hydration. Research recipes carefully, be aware of foods that are toxic to dogs (such as onions, grapes, and avocados), and consider supplements to ensure nutritional balance. A veterinary nutritionist is often needed to confirm a diet is complete and balanced for your dog's specific needs.

Raw feeding. Some owners of dogs with sensitive stomachs report improvement after switching to a raw diet. However, raw feeding carries risks related to nutrient balance, food safety during preparation and storage, and ensuring complete nutrition. If you are interested in raw feeding, do thorough research, understand the risks, and consult your veterinarian before making the switch.

For additional digestive support alongside any dietary approach, browse the full Glandex digestive health collection for probiotics, fiber supplements, and more.

Breeds commonly affected
Most at risk

Frequently Asked Questions

What are the signs of a sensitive stomach in dogs?

Common signs include loose or runny stools, excessive gas, poor appetite, a dull coat, poor overall health, and house accidents. These symptoms often appear after a change in food or when a dog is eating something that does not agree with their digestive system. If symptoms persist or are accompanied by more serious signs like blood in stool, repeated vomiting, or lethargy, consult your veterinarian.

When should I take my dog to the vet for stomach issues?

See your veterinarian immediately if your dog has blood in their stool, vomits more than once, has an unsettled stomach for three or more days, experiences unplanned weight loss, shows lethargy or low energy, passes stools with mucus or that appear black or grey, or shows signs of abdominal pain such as sensitivity when their stomach is touched or guarding their abdomen.

How should I switch my dog's food to avoid stomach upset?

Always transition to a new food gradually over the course of a week. Start by mixing three-quarters of the old food with one-quarter of the new food. Over the next several days, gradually increase the proportion of new food until the transition is complete. Abrupt food changes are one of the most common causes of digestive upset in dogs.

Can probiotics help a dog with a sensitive stomach?

Yes. A good probiotic supplement bolsters the natural population of beneficial bacteria in your dog's digestive system. These beneficial bacteria compete with harmful bacteria for nutrients and block points where pathogens try to attach, helping to support healthy digestion. Prebiotics — a special type of dietary fiber — work alongside probiotics by feeding and supporting the beneficial bacteria.

What is an elimination diet for dogs?

An elimination diet is a method for identifying which specific foods trigger your dog's stomach issues. It works by limiting the ingredients in your dog's food to a minimal number, then introducing new ingredients one at a time over 10 to 12 weeks while monitoring your dog's reaction. This process helps isolate which ingredients cause problems. Always consult your veterinarian before beginning an elimination diet, as they can guide you on the right approach and ensure your dog continues to receive balanced nutrition throughout the process.

What foods are dogs most commonly sensitive to?

Common food sensitivities in dogs include beef, lamb, chicken, turkey, milk and milk products, eggs and egg products, soy, fish, certain vegetables, and carbohydrates like rice and potato. Some dogs are also sensitive to novel proteins — proteins not commonly found in commercial pet food, such as rabbit and venison. Sensitivities are highly individual, so what triggers one dog may be perfectly fine for another.

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Veterinary Disclaimer

This article was reviewed by Dr. James Bascharon, DVM.Vetnique Labs was founded by Dr. James Bascharon, DVM, and all content is reviewed by our Vet Advisory Board. This information is not a substitute for professional veterinary advice. Always consult your veterinarian.

Vetnique Team
About the Author

Vetnique Team

The pet health and wellness team at Vetnique. Backed by veterinary science and dedicated to helping pet parents keep their dogs and cats happy and healthy.

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