Dog Food With Glucosamine and Chondroitin: Does It Help?
The evidence that glucosamine and chondroitin improve a dog's joints is limited and conflicting, and still 62% of the veterinarians in a survey reported in a 2002 review recommended these products. The source is a review in the Open Veterinary Journal, indexed in PubMed. In our catalog, 13 of the 51 dog food formulas declare both compounds on the label. This guide shows what the studies allow us to say, why the label does not answer the question of quantity, and when the subject belongs in a vet visit, not in the bowl.
Does glucosamine in dog food help a dog's joints?
Nobody can say with confidence. The 2017 review in the Open Veterinary Journal states that, despite limited and conflicting evidence, veterinarians commonly recommend the two compounds for dogs with osteoarthritis, and that well-designed clinical studies on the real effect of the treatment are lacking.
The same review, published 9 years ago, cites a 2002 review (Pascoe) that reports a survey in which 62% of the veterinarians consulted recommended products with glucosamine and chondroitin. Those 62% said they saw a beneficial effect, despite the lack of clinical evidence. A clinic's observation is a signal. It is not proof.
That does not mean the compounds do not work. It means the science has not settled the question. Anyone who promises "joint protection" because of these ingredients is going beyond what the studies support.
Is the dose in dog food enough?
The label cannot answer that. The studies tested different products, salts and doses, and the review says this makes it hard to draw conclusions about efficacy. The authors themselves propose that future studies run for at least 90 days. Without an established reference dose, there is no yardstick to say whether the amount in a food is enough.
In our catalog, these formulas carry the glucosamine and chondroitin declaration, with no amount of either compound. For that reason, this guide does not compare "who has more." The information that would settle that question is not available to the owner.
The dose of any joint product is a matter for the veterinarian who follows your dog. Do not calculate it on your own, and do not add a supplement on top of the food without talking to them.
Which dog foods list glucosamine and chondroitin?
Of the 51 dog food formulas in our catalog, 13 declare both glucosamine and chondroitin on the label. They range from adult formulas of every size to two senior formulas from Blue Buffalo. All of them are in the table below, with the label numbers for protein, fat and energy.
| Dog food | Brand | Protein | Fat | kcal/kg |
|---|---|---|---|---|
| Blue Buffalo Life Protection Formula Senior 7+ Chicken & Brown Rice | Blue Buffalo | 18% | 10% | 3,416 |
| Blue Buffalo Life Protection Formula Small Breed Senior Chicken & Brown Rice | Blue Buffalo | 23% | 13% | 3,532 |
| Diamond Naturals Adult Lamb Meal & Rice | Diamond Naturals | 23% | 14% | 3,550 |
| Hill's Science Diet Adult Large Breed Chicken & Barley | Hill's Science Diet | 20% | 11.5% | 3,675 |
| Hill's Science Diet Perfect Weight Chicken & Brown Rice | Hill's Science Diet | 23% | 10.5% | 3,189 |
| IAMS ProActive Health Large Breed Adult Chicken & Whole Grain | IAMS | 22.5% | 12% | 3,551 |
| IAMS ProActive Health Small Breed Adult Chicken & Whole Grains | IAMS | 27% | 17% | 3,800 |
| Merrick Grain-Free Adult Real Chicken & Sweet Potato | Merrick | 32% | 16% | 3,592 |
| Merrick Grain-Free Adult Real Texas Beef & Sweet Potato | Merrick | 32% | 15% | 3,676 |
| Pedigree Complete Nutrition Small Dog Adult Roasted Chicken, Rice & Vegetable | Pedigree | 21% | 11% | 3,469 |
| VICTOR Performance Beef, Chicken & Pork Meal | VICTOR | 26% | 18% | 3,756 |
| Wellness Complete Health Large Breed Adult Chicken & Brown Rice | Wellness | 26% | 11% | not in our data |
| Wellness Complete Health Small Breed Turkey & Oatmeal | Wellness | 28% | 15% | 3,720 |
Protein and fat are label values, as fed. Having the compounds on the label does not make a formula better for your dog: the ranking compares the whole formula, not a single ingredient. A food without the compounds can suit your dog better than one with them. Compare them in the dog food ranking and filter by your dog's profile.
If your dog is older, also see when to switch to a senior dog food.
When is it a medication matter, not a food matter?
When the dog limps, has trouble getting up or has stopped playing, the conversation is with the veterinarian, not with the label. Osteoarthritis is a progressive and debilitating disease, and the professional makes the diagnosis and chooses the treatment for your dog.
According to the 2017 review, veterinarians commonly recommend the two compounds as an alternative for dogs that cannot tolerate the adverse effects of nonsteroidal anti-inflammatory drugs (NSAIDs), or as additional therapy. The prescribed medication and the supplement have different places in treatment, and food replaces neither.
Dog food with glucosamine and chondroitin, then, is a formulation detail. It does not treat arthritis and should not delay the trip to the clinic.
Frequently asked questions
Does dog food with glucosamine and chondroitin prevent arthritis in dogs?
There is no evidence to say so. The 2017 review deals with dogs that already have osteoarthritis and describes the evidence as limited and conflicting. Prevention in a healthy dog was not its subject.
Does every senior dog need food with glucosamine?
No. The compounds are a formulation extra, not a requirement. The decision for your dog depends on the veterinarian's assessment, which looks at the history and the condition of the joints.
Can I give a glucosamine supplement along with the food?
Only with your veterinarian's guidance. The studies used different products and doses, and there is no established reference dose for an owner to apply at home.
Does a high ranking mean a food looks after the joints?
No. The ranking evaluates the whole formula. Glucosamine and chondroitin on the label is just one of the items considered.
If your question is how to choose a good food for your dog, start with their profile: size, age and weight.
Want to understand the term Glucosamine? Check the Glossary.
Picked by score from our overall dog ranking, not by the topic of this article. To get it right for your pet — age, weight, spayed or neutered — take the quiz and get a list made for them. A pet with a diagnosed condition needs a diet prescribed by a veterinarian.
