8 Best Dog Food For Great Danes with Diarrhea

Does your Great Dane struggle with diarrhea? If so, you know how stressful it can be. Most dogs get diarrhea now and then, and Great Danes are no exception.

Diarrhea can be caused by eating something unusual, a sudden diet change, stress, infections, parasites, food sensitivities and many other illnesses. Mild cases often pass in a day or two, but some causes are serious.

Your vet should be your first stop, especially if diarrhea lasts or your dog seems unwell. Below are some foods owners often consider for Great Danes with sensitive stomachs, plus tips on diet and when to call the vet.

What are the Symptoms of Diarrhea in Great Dane?

The main sign of diarrhea is loose or watery stool, often more frequent than normal. Your Great Dane may also strain, have accidents, pass gas, or have mucus or blood in the stool.

Some dogs also vomit, eat less, seem tired or have a fever. These signs mean your dog needs a vet sooner rather than later.

Cornell University's Riney Canine Health Center advises seeing a vet if your dog stops eating, is lethargic, has black or tarry stool, is also vomiting, or if the diarrhea doesn't clear up in 48 to 72 hours.

Great Danes are also at high risk of bloat (GDV). If your Dane has a swollen belly, retches without bringing anything up, or seems restless and in pain, go to an emergency vet right away.

OUR TOP PICKS

Best Pick

Rachael Ray Nutrish Dry Dog Food

Rachael Ray Nutrish Dry Dog Food

Flavor: Chicken and Veggies
Item Form: Dry
Breed: All breeds sizes

Budget Pick

Hill’s Science Diet Dry Dog Food

Hill’s Science Diet Dry Dog Food

Flavor: Chicken and Barley
Item Form: Dry
Breed: All breed sizes

Editor Pick

Royal Canin Dry Dog Food

Royal Canin Dry Dog Food

Item Form: Dry
Breed: All breed sizes

List of 8 Best Dog Food for Great Dane with Diarrhea

Rachael Ray Nutrish Dry Dog Food
Hill’s Science Diet Dry Dog Food
Royal Canin Dry Dog Food
Natural Balance Limited Ingredient Dog Food
Victor Super Premium Dog Food
Blue Buffalo Basics Skin and Stomach Dry Dog Food
Instinct Limited Ingredient Dog Food
Wellness Simple Natural Limited Ingredient Dry Dog Food

Before you buy: None of these regular foods is a treatment for diarrhea. If your Dane has ongoing diarrhea, your vet may recommend a prescription gastrointestinal diet instead.

Recipes, ingredients and bag sizes change over time, so always check the current label. Look for a food made for large-breed dogs at your Dane's life stage, and change foods gradually.

Several picks below are grain-free with peas, lentils or potatoes high on the ingredient list. The FDA has investigated reports of dilated cardiomyopathy (DCM), a serious heart disease, in dogs eating diets like these. Great Danes are already one of the breeds prone to DCM, so talk to your vet before choosing a grain-free food.

1. Rachael Ray Nutrish Dry Dog Food – Overall Best

Rachael Ray Nutrish Dry Dog Food – Overall Best

Reasons to Buy

Chicken-based recipe
Contains grains
Widely available
Usually affordable

Reasons to Avoid

Not made specifically for sensitive stomachs

Features:

Chicken is listed as the main protein.
No artificial flavors listed.
Complete and balanced for adult dogs.

Product Description:

Rachael Ray Nutrish Chicken and Veggies is a budget-friendly adult dry food with chicken as its main protein. It is a general adult food, not a food designed for digestive problems. Check the current label for the guaranteed analysis and ingredient list.

Specifications:


Type	With Grain
Best for	All Breed Sizes
Life stage	Adult
Form	Dry

Company Review:

Rachael Ray Nutrish is a widely sold pet food brand whose recipes use chicken, beef or turkey as the main proteins.

About the product:

This recipe lists chicken as its main protein. It is an everyday adult food rather than a sensitive-stomach formula, so it is best for Danes whose stomachs are already settled.

If your Dane does well on chicken and grains, it may be a simple, affordable option. If your dog is sensitive to chicken or grains, choose something else.

Highlights: Affordable adult food with chicken as the main protein.

2. Hill’s Science Diet Dry Dog Food – Supports Immune System

Reasons to Buy

Made for sensitive stomach and skin
Contains prebiotic fiber
Includes grains

Reasons to Avoid

Costs more than basic foods

Features:

Formulated for adult dogs with sensitive stomachs and skin.
Contains prebiotic fiber.
Made in the USA.

Product Description:

Hill’s Science Diet Sensitive Stomach and Skin is an adult dry food made for dogs with sensitive digestion. It includes prebiotic fiber to support gut bacteria. Check the bag for the current recipe and nutrient levels.

Specifications:


Type	With Grain, Sensitive Digestion
Best for	All Breeds Size
Life stage	Adult
Form	Dry

Company Review:

Hill’s is a major pet food company that makes both over-the-counter foods and prescription diets sold through vets.

About the product:

This food is made for sensitive stomachs, which makes it a reasonable choice for a Dane with occasional digestive upset. It is not a treatment for diarrhea.

If your Dane has frequent or ongoing diarrhea, ask your vet whether a prescription gastrointestinal diet would be better. The formula is also designed to support skin health.

Highlights: A sensitive-stomach recipe from a well-known brand.

3. Royal Canin Dry Dog Food – Delicious Flavor

3. Royal Canin Dry Dog Food – Delicious flavor

Reasons to Buy

Made for digestive care
Contains prebiotics
Includes grains

Reasons to Avoid

Costly

Features:

Formulated for digestive support.
Contains prebiotics and fiber.
Complete and balanced for adult dogs.

Product Description:

Royal Canin makes dry foods aimed at digestive care. Formulas with brewers rice as a main ingredient are common in the brand's digestive lines. Check the specific product label for current ingredients and nutrient levels.

Specification:


Type	With Grain
Best for	All Breeds Size
Life stage	Adult
Form	Dry

Company Review:

Royal Canin makes size-, breed- and condition-specific foods, including prescription diets sold through vets.

About the product:

This type of food is designed for adult dogs with sensitive digestion. It may suit a Dane that needs a gentle everyday diet once diarrhea has settled.

Royal Canin also makes prescription gastrointestinal diets. If your Dane has ongoing diarrhea, ask your vet whether one of those is a better fit.

Highlights: A digestive-care formula from a brand with large-breed options.

Want Best Nutrition for your Danes? Checkout our these Articles:

4. Natural Balance Limited Ingredient Dog Food – Essential proteins and amino acids

Reasons to Buy

Limited ingredients
Wet food many dogs find tasty
Single main protein

Reasons to Avoid

Grain-free (see the FDA note above)
Costly to feed a giant breed on canned food alone

Features:

Limited-ingredient recipe.
Grain-free with potatoes.
No corn, wheat or soy listed.

Product Description:

Natural Balance Limited Ingredient wet food uses a short ingredient list with one main animal protein. Limited-ingredient foods can help when your vet suspects a food sensitivity. Canned food is mostly water, so its protein and fat percentages look low compared with dry food.

Specifications:


Type	Grain-Free
Best for	All Breeds Size
Life stage	Adult
Form	Wet

Company Review:

Natural Balance is known for its limited-ingredient diets, sold in both dry and wet forms.

About the product:

A short ingredient list makes it easier to avoid ingredients your dog reacts to. Wet food can also tempt a dog whose appetite is low after a stomach upset.

This recipe is grain-free and uses potatoes, so talk to your vet about DCM risk first. For a dog the size of a Great Dane, it may work better as a topper than as the whole diet.

Highlights: A limited-ingredient wet food for dogs with suspected food sensitivities.

5. Victor Super Premium Dog Food – Budget-friendly

Reasons to Buy

Includes grains
Beef-based recipe
Usually affordable

Reasons to Avoid

Not made specifically for sensitive stomachs

Features:

Beef meal is the main protein.
Includes grains such as brown rice and sorghum.
Made in the USA.

Product Description:

Victor offers several grain-inclusive dry foods at a lower price than many premium brands. This recipe uses beef meal as its main protein with grains such as rice and sorghum. Check the current bag for the full ingredient list and analysis.

Specifications:


Type	Gluten-Free, with Grain
Best for	All Breeds Size
Life stage	Adult
Form	Dry food

Company Review:

Victor is a pet food brand made in Texas that sells both grain-free and grain-inclusive recipes.

About the product:

This is a general adult food, not a sensitive-stomach formula. It may suit Danes that do well on beef and grains.

As with any dry food, make sure your Dane always has fresh water. Switch to it gradually over about a week to avoid upsetting your dog's stomach.

Highlights: A budget-friendly, grain-inclusive option.

6. Blue Buffalo Basics Skin and Stomach Dry Dog Food – Natural ingredients

Reasons to Buy

Single animal protein (turkey)
Limited ingredients
No artificial flavors listed

Reasons to Avoid

Grain-free with peas (see the FDA note above)
Large kibble may not suit every dog

Features:

Single animal protein source.
Made for skin and stomach care.
No corn, wheat or dairy listed.

Product Description:

Blue Buffalo Basics Skin and Stomach is a limited-ingredient recipe built around turkey. It is designed for dogs with sensitivities. This grain-free version lists peas and potatoes among its main ingredients.

Specifications:


Type	Grain-Free
Best for	All Breeds Sizes
Life stage	Adult
Form	Dry food

Company Review:

Blue Buffalo is a large pet food brand known for its "natural" marketing and no-by-product recipes.

About the product:

This food uses one animal protein, which can help if your vet suspects your Dane reacts to chicken or beef.

Because it is grain-free with peas, ask your vet about DCM risk before choosing it for a Great Dane. Blue Buffalo Basics also comes in grain-inclusive recipes.

Highlights: A limited-ingredient turkey recipe for dogs with sensitivities.

7. Instinct Limited Ingredient Dog Food – Grain-free

Reasons to Buy

One animal protein (lamb)
Limited ingredients

Reasons to Avoid

Costly
Grain-free with peas (see the FDA note above)

Features:

One animal protein and a short ingredient list.
Grain-free.
No eggs or soy listed.

Product Description:

Instinct Limited Ingredient uses lamb as its single animal protein. Limited-ingredient foods are often used when a food sensitivity is suspected. This version is grain-free and uses peas.

Specifications:


Type	Grain-Free, Gluten-Free
Best for	All Breeds Sizes
Life stage	Adult
Form	Dry food

Company Review:

Instinct is a brand best known for raw and raw-coated foods. It also makes limited-ingredient kibble.

About the product:

This recipe is not a treatment for diarrhea. It may help some dogs with food sensitivities because it has one animal protein and few other ingredients.

Because it is grain-free with peas, ask your vet about DCM risk before choosing it for a Great Dane. Raw diets also carry a risk of bacteria such as Salmonella, so ask your vet before feeding raw to a dog with digestive problems.

Highlights: A limited-ingredient lamb recipe for suspected food sensitivities.

8. Wellness Simple Natural Limited Ingredient Dry Dog Food – Balanced Ingredients

Reasons to Buy

Limited ingredients
Salmon as the main protein
Good for many sensitive stomachs

Reasons to Avoid

Grain-free with potatoes and peas (see the FDA note above)
Only for adults

Features:

Salmon is the first ingredient.
Limited-ingredient recipe.
Made in the USA.

Product Description:

Wellness Simple is a limited-ingredient line for dogs with food sensitivities. This salmon and potato recipe is grain-free. Check the current label for the full ingredient list and analysis.

Specifications:


Type	Grain-free, Chicken-free, Gluten-free
Best for	All Breeds Sizes
Life stage	Adult
Form	Dry food

Company Review:

Wellness makes both grain-free and grain-inclusive foods, including the limited-ingredient Simple line.

About the product:

Salmon is a fish protein that some dogs with chicken or beef sensitivities tolerate well. The short ingredient list makes it easier to avoid triggers.

Because it is grain-free with potatoes and peas, ask your vet about DCM risk before choosing it for a Great Dane. Store dry food in an airtight container.

Highlights: A salmon-based limited-ingredient option.

Comparison of Two Products

Our overall pick is Rachael Ray Nutrish Dry Dog Food. It is an affordable, grain-inclusive adult food with chicken as the main protein.

It is an everyday food, though, not a sensitive-stomach formula. If your Dane often has loose stools, Hill's Science Diet Sensitive Stomach and Skin or a vet-recommended prescription diet may suit it better.

If you are on a budget, Victor Super Premium Dog Food is another grain-inclusive option. Whatever you choose, switch gradually and keep fresh water available.

What Ingredients does a Great Dane with Diarrhea Avoid?

There is no single list of ingredients every Dane with diarrhea must avoid. If your vet suspects a food allergy or sensitivity, the usual culprits are proteins such as chicken, beef or dairy. Your vet may suggest an elimination diet to find the trigger.

During a bout of diarrhea, avoid rich, fatty foods, table scraps and sudden diet changes. Never feed foods that are toxic to dogs.

What Ingredients to look for a Great Dane with Diarrhea?

There is no magic ingredient, but these points help:

Highly digestible ingredients: Bland, easily digested foods such as plain cooked chicken or low-fat hamburger with white rice are often used short term. Moderate fat is easier on the gut, while very fatty foods can trigger pancreatitis.
Fiber: Some fiber helps firm up stools. Your vet can tell you whether your Dane needs more.
Probiotics: Probiotics made for dogs may help, but ask your vet which product to use.

Buying Guide of Best Dog Food for Great Dane with Diarrhea

Before buying a food for your Great Dane, consider these factors:

Carbohydrates

Carbohydrates provide energy, and grains like rice are easy for most dogs to digest. The total calories matter more for weight than carbohydrates alone.

Choose a complete and balanced food and feed the amount that keeps your Dane lean.

Protein

Protein supports muscles, skin, organs and the immune system. Good sources include meat, poultry and fish.

Named meat meals and by-products can still be good-quality protein sources. Focus on whether the food is complete and balanced and whether your dog does well on it.

Fat

Fat provides energy and helps the body absorb vitamins A, D, E and K. Omega-3 fatty acids from fish oil support skin and coat.

Very high-fat foods are harder on an upset stomach and can trigger pancreatitis, so moderate fat is best. Glucosamine is a joint supplement, not a fat; ask your vet whether your Dane needs it.

Portion Size and Feeding

Follow the feeding guide on the bag as a starting point, then adjust to keep your Dane lean. Your vet can help you find the right amount.

Great Danes are one of the breeds most at risk of bloat (GDV). According to the American College of Veterinary Surgeons, feeding a single large meal once a day is a risk factor, so feed adult Danes two or three smaller meals a day instead.

Puppies need three to four meals a day. Ask your vet when to move your puppy to two or three meals.

Activity level

Great Danes vary in how active they are. A Dane that walks a lot needs more calories than a couch potato. Ask your vet how much to feed for your dog's activity level.

Life Stages

Great Dane puppies need a large-breed puppy food. These foods control calories, calcium and phosphorus to help the skeleton grow at a steady pace.

Growing too fast, or getting too much calcium, can raise the risk of bone and joint problems in giant breeds. Don't add calcium supplements to a complete puppy food unless your vet tells you to.

Adult Danes need an adult food that keeps them lean. Extra weight puts stress on their joints.

What Causes Diarrhea with my Great Dane?

There are many causes of diarrhea, and some are serious. Common ones include eating garbage or something unusual, sudden diet changes, stress, parasites, infections, food sensitivities, and diseases of the gut, pancreas, liver or other organs.

A sudden diet change is a common cause. If you change your Dane's food, mix the new food in gradually.

A single loose stool in a dog that is otherwise acting normal is usually not an emergency. Call your vet if diarrhea lasts more than 48 to 72 hours, or sooner if your dog seems unwell.

Is Dry or Wet Dog Food Better for Gut Health?

Both dry and wet food can be healthy. Dry food is more affordable and easier to store, which matters when feeding a giant breed.

Wet food is soft and often tastier, which can help a dog with a poor appetite. It costs more and must be refrigerated after opening. Overall, the specific food matters more than whether it is dry or wet.

What can the Color of my Great Dane Waste tell me about his Health?

The color and texture of your dog's stool can give clues about what's going on inside. Here are some general signs to watch for:

Green poop: This can happen if your Dane eats a lot of grass. If it keeps happening or comes with other signs, check with your vet.
Black, tarry poop: This can mean bleeding in the upper digestive tract. Cornell notes that black, tarry stool needs a vet. Call your vet right away.
Yellow or mucus-covered poop: This can point to irritation in the gut, a diet issue or other problems. Talk to your vet.
Grey and greasy poop: This can mean your dog isn't digesting fat properly, which can happen with pancreatic problems. See your vet.
Bloody poop: Red blood in the stool often comes from inflammation of the colon (colitis). Small streaks in a dog that seems fine still deserve a call to your vet; large amounts of blood are an emergency.

Before you Switch your Great Dane’s Food

Dog Food for Great Dane with Diarrhea

If your Great Dane has diarrhea once but is eating and acting normally, watch closely. If the stools return to normal, you may not need to change anything.

If diarrhea keeps happening, call your vet before changing foods. In the meantime, these steps can help:

Hydration

Diarrhea can quickly lead to dehydration, so make sure your Great Dane always has fresh, clean water. Offer water often.

If your dog won't drink, is vomiting, or seems weak, see your vet right away.

Ration the Food

Feed small meals while your Dane recovers. Splitting the day's food into three or more small meals is gentler on the stomach.

Small, frequent meals also help reduce the risk of bloat.

Short Food Break

Cornell's Riney Canine Health Center says a short break from food, 12 to 24 hours, followed by a bland diet can help in mild cases. Keep offering water during that time.

Ask your vet before fasting your dog. Puppies, older dogs and dogs with health problems like diabetes should not go without food unless a vet says so.

End the Fasting with a Specialized Diet

Don't go straight back to your Dane's regular food. Offer a bland diet, such as boiled chicken or low-fat hamburger with white rice, or a prescription diet from your vet.

Keep the bland food plain, with no fat, butter, spices or seasonings. Cornell notes that bland home diets are not balanced for long-term feeding.

Skip dairy, which many dogs don't digest well. Ask your vet before adding other foods.

Take your time Changing Back to the Normal Food

Once the stools are firm, switch back to regular food gradually. A bland or vet-recommended diet for a few days is common, but follow your vet's advice.

Mix the bland and regular food over several days. For example, feed three parts bland to one part regular food at first. Then move to half and half, then one part bland to three parts regular, then regular food only.

Add Supplements if Necessary

Food alone isn't always enough. Your vet may suggest a probiotic made for dogs after a bout of diarrhea.

Use the product and schedule your vet recommends.

Don’t give your Dog Human Probiotics

Many dog probiotics are sold without a prescription at vet offices and pet stores. Choose a product made for dogs and ask your vet which one to use.

Never give your Great Dane any human medicine for diarrhea without your vet's approval. Some human medicines are dangerous for dogs.

What are the Best Dog Food Benefits for Great Dane with Diarrhea?

A gentle, consistent diet can help in several ways:

Supports recovery: Most mild diarrhea clears up in a few days. An easily digested diet is gentler on the gut while it heals.
Reduces flare-ups: A consistent, gentle diet can help a dog with a sensitive stomach have fewer upsets.
Helps manage food sensitivities: If your vet finds a food sensitivity, a limited-ingredient or prescription diet can avoid the trigger.
Provides proper nutrition: A complete and balanced food keeps your Dane well nourished while its stomach recovers.

FREQUENTLY ASKED QUESTIONS

How long will it take my Great Dane to Become Dehydrated if it has Diarrhea?

It depends on how severe the diarrhea is and whether your dog is also vomiting. Severe, watery diarrhea can dehydrate a dog within a day. See your vet if your Dane can't keep water down, seems weak, or has diarrhea for more than 48 to 72 hours.

Is Diarrhea Always a Symptom of Stomach Infection in Great Dane?

No. Infections are one cause, but diet changes, eating something unusual, stress, parasites, food sensitivities and other illnesses can all cause diarrhea.

Can Stress lead to Diarrhea?

Yes. Stress from travel, boarding or changes at home can cause diarrhea in some dogs.

Can an Allergic Reaction lead to Diarrhea in a Great Dane?

Yes, food allergies and sensitivities can cause diarrhea. The most common food triggers are proteins such as chicken, beef or dairy, not grains.

Do I Always need to take my Great Dane to the vet if it has Diarrhea?

Not always. A single loose stool in a dog that is otherwise acting normal can be watched at home. See your vet if diarrhea lasts more than 48 to 72 hours, or right away if your Dane stops eating, vomits, is lethargic, has black or bloody stools, or has a swollen belly.

Conclusion

It is hard to see your Great Dane with diarrhea. Start with your vet so you know the cause, especially if the problem keeps coming back.

A gentle, consistent diet can help a Dane with a sensitive stomach. Change foods gradually, feed several small meals a day to lower bloat risk, and ask your vet before choosing a grain-free food.

Want to Learn more? Also Read our These Articles:

Sources

Diarrhea, Cornell University College of Veterinary Medicine
FDA Investigation into Potential Link between Certain Diets and Canine Dilated Cardiomyopathy, U.S. Food and Drug Administration
Gastric Dilatation-Volvulus, American College of Veterinary Surgeons