Bloat is one of the most terrifying and uncertain things we can face as Great Dane owners. It is painful, distressing, and can happen quickly to dogs that otherwise seem healthy.

Bloat is where the stomach fills up with gas, air, food or fluid. It is a life-threatening emergency that requires immediate medical attention, especially if the stomach flips (‘torsion’).


The risk that a dog over 100lbs may experience a bloat event in its lifetime.


The increased risk that a dog may experience bloat if the dog is related within one degree to another dog that experienced bloat.


While the exact cause of bloat in Great Danes has not been proven, a lot of research indicates that bloat has strong ties to genetics, anxiety and gut health.

Ethical breeders will utilize advances in modern genetics testing to verify if their breeding dogs have markers for bloat or not, and will not breed dogs where a history of bloat is in the direct lineage.

Emerging research also indicates that poor gut health may be a contributing factor to bloat, or at the very least does very little to help prevent it. Basically, poor genetics + poor gut health create a perfect storm.

Great Danes that are otherwise low-risk for Bloat can still experience a bloat event, and it’s important to note that Gastropexy doesn’t prevent it. Gastropexy/tacking can, however help keep the stomach from flipping (torsion) if a bloat event occurs.

Gut health can be affected by genetics, diet, medications, vaccines, vitamins and environment.

Many Great Danes struggle with diet and food changes. Soft stools, excess gas, diarrhea, regular puking, tummy upset and allergies (itching, swelling, redness, yeast, buildup/gunk in ears) are all signs that gut health and diet need to be addressed.

Studies indicate a strong correlation between stomach bacteria, inflammatory bowel disease and bloat, and that a variety of similar risk factors (including genetics) contribute to this.

Addressing these factors is especially important if you are aware of a genetic link with bloat in the lineage of your dog (please hold breeders accountable! There are now genetic tests available for this and breeders should NOT be breeding or producing dogs that carry markers for bloat).

Here are our tips for addressing gut health in Great Danes.


Add a probiotic supplement. Even if the food you feed contains ‘added probiotics’, a quality supplement is more likely to contain healthy, live, beneficial bacteria.

We recommend the following brands on Amazon (links to product):

Proviable Capsules

Nature’s Farmacy Dogzymes

Add these to their meals. Most dogs eat them right up, especially the powders sprinkled on top of a raw egg or scoop of fresh food. As always chat with your vet before starting any new supplement! 



Choosing the right kibble is exceptionally important for Great Danes. Low quality foods and foods that are heavy in fillers are not recommended.

If your Great Dane is struggling with gas, burping, puking, allergies and/or soft stools and diarrhea, you need to look at parasites, medical reasons, and the food.

We do not recommend low quality kibbles.

There is some interesting data regarding a notable increase of bloat events in places where kibble diets are more common, which could indicate an additional link between kibble and bloat. More studies are needed. 


Gut health may be improved through the thoughtful use of diet, probiotics and collagen. Chat with your veterinarian. It is extermely important to address gut health issues in Great Danes!


IBS (Irritable Bowl Syndrome), leaky gut, poor gut health and bloat seem to be related. Symptoms include chronic diarrhea, mucus, abdominal pain, low energy and lack of appetite.

This needs to be addressed. We understand it can be a frustrating (and smelly!) problem to eliminate! 

We highly recommend adding a pure collagen supplement in addition to probiotics. 

Collagen helps with gut health and IBS flare-ups by lining the stomach and providing it with the proper amino acids and proteins to rebuild healthy and functional connective tissue.

A lot of research is pointing to the importance of collagen. Liquid collagen is better absorbed than powders. If you are noticing that your Great Dane often has loose stools, diarrhea, gas/farting, vomiting, low-energy or loss of appetite, you should consider both a probiotic and a collagen supplement. 

We recommend Biocell. Use the code 420264 for $10 off.

We can never really prevent bloat, but we can take steps to try and minimize the chance that a bloat event may occur. We owe it to our Great Danes to keep them healthy and address their gut health!

Grab this infographic below and share it on your website, Instagram, or anywhere that can help spread the word about bloat. 

NOTES: There is no known way to prevent bloat, and the causes are not truly understood. We do our best to present the most up-to-date research, however it is up to the reader to make decisions regarding the health and well-being of their dog. We make no claims here to prevent or treat bloat. Find a veterinarian with GIANT breed experience, and chat with them. 

Some of the products we list on our website contain affiliate links. If you choose to make a purchase, we may receive a small commission for referring you. This commission does not affect the price of the product and is used to fund this website, our content and Great Dane Health Research. 

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