Royal Canin Veterinary Diet Gastrointestinal Low Fat is a prescription dog food with a reduced fat level, made for dogs that do not tolerate fat well. Vets often recommend this type of diet for dogs with pancreatitis, high blood fat (hyperlipidemia) or certain digestive disorders, but only after a diagnosis. Never start it on your own, because a low-fat diet is not right for every dog with diarrhea.
Who Might Need a Low-Fat Diet?
- Dogs recovering from or prone to pancreatitis.
- Dogs with high triglycerides or cholesterol.
- Dogs with digestive disorders where fat is poorly absorbed or triggers vomiting and diarrhea.
Your vet will decide based on exam findings and tests. Some dogs with chronic digestive problems need a different type of diet, such as a hydrolyzed or highly digestible one.
How the Diet Is Designed
- Low fat: The fat level is reduced compared with a regular adult food. Check the label for the exact percentage.
- Highly digestible ingredients: Easy-to-digest protein and carbohydrates reduce the load on the gut.
- Blended fibers and prebiotics: Support stool quality and a healthy gut bacteria balance.
- Omega-3 fatty acids: Fish oil provides EPA and DHA, which may help support the gut lining.
It is sold as a dry kibble and as a canned food. Because it is a therapeutic diet, you need your vet to authorize the purchase.
Feeding Tips
- Transition gradually over about a week unless your vet says otherwise.
- Feed measured portions, since a dog with pancreatitis is often overweight.
- Avoid fatty treats, table scraps and chew bones. Even a small fatty snack can set off a flare-up.
- Store dry food in a cool, dry place in its original bag.
When to Call the Vet
See your vet right away if your dog has repeated vomiting, a painful or bloated belly, bloody diarrhea, lethargy or refuses food. Pancreatitis can be serious and needs treatment.
Pros and Cons
- Pro: Made for fat-sensitive dogs and backed by veterinary research.
- Pro: Dry and canned options.
- Con: Needs a prescription and costs more than regular food.
- Con: Contains grains and common by-products that some owners avoid.
Related reading: our reviews of Royal Canin Gastrointestinal, Hill’s Digestive Care i/d and our guide to low purine dog food.
This is general information, not veterinary advice. Only feed a prescription diet under your veterinarian’s direction.
Bottom Line
Royal Canin Gastrointestinal Low Fat is a good fit for dogs that need less dietary fat, but it should be chosen with your vet after a diagnosis, fed as directed and paired with a no-fatty-treats rule.
