If your dog struggles with chronic pain from osteoarthritis or shows signs of joint discomfort, finding the right supplement can make a world of difference in their quality of life. According to veterinary experts, marine-based omega-3 fatty acids are among the most effective ingredients for easing joint pain in dogs, offering anti-inflammatory benefits that can improve mobility and reduce discomfort.
We consulted leading veterinarians, including Dr. Erin Miscioscia from the University of Florida College of Veterinary Medicine and Dr. Duncan Lascelles from NC State University’s Comparative Pain Research and Education Centre, to identify the most effective joint supplements for dogs. While research on some ingredients remains limited, omega-3s from marine sources consistently show the strongest evidence for pain relief in arthritic dogs. Our top pick, Pet Honesty Wild Caught Omega-3 Fish Oil, combines four marine-based fish oils and has undergone third-party testing for potency and safety.
Before adding any supplement to your dog’s routine, consult your veterinarian. They can help determine the right product and dosage based on your dog’s specific health needs, weight, and any existing conditions.
Our Top Picks for the Best Joint Supplements for Dogs
Best Overall: Pet Honesty Wild Caught Omega-3 Fish Oil – See at Chewy
Best Chews: Vetoquinol Flexadin Advanced with UC-II Chews for Cats and Dogs – See at Chewy
Best Tablets: NaturVet Glucosamine DS Plus Moderate Joint Care Chewable Tabs – See at Chewy
Best Treats: NaturVet ArthriSoothe-Gold Advanced Joint Care Soft Chews – See at Chewy
Best Powder: Wholistic Pet Organics Joint Mobility GLM + Enhanced Multivitamin – See at Chewy
Best Overall: Pet Honesty Wild Caught Omega-3 Fish Oil
This third-party-tested pure fish oil contains four marine-based oils rich in omega fatty acids, which experts say provide the most reliable anti-inflammatory benefits for easing joint pain in dogs. “Looking at real dogs who are seeing a real benefit in joint pain relief, it’s coming from omega-3 fatty acids, namely in marine-based oils,” Dr. Lascelles explains. Studies confirm that anti-inflammatory omega-3 supplements offer greater pain relief for osteoarthritic dogs compared to other active ingredients.
Dr. Miscioscia recommends mixing fish oil directly into your dog’s food or using it as a meal topper for optimal absorption. Pet Honesty’s formula combines sardine, anchovy, mackerel, and herring oils, all naturally purified to minimize the fishy smell and taste that some dogs find unappealing. It carries the National Animal Supplement Council (NASC) seal and has been independently tested by ConsumerLab to verify potency, purity, and freedom from mercury.
Fish oil is generally safe for all dogs, but introduce it slowly to avoid diarrhea, which can occur if the dose is too high too quickly. Each teaspoon contains 41 calories, so maintaining a healthy weight is crucial for managing arthritis. Ask your vet about the right dose to balance calories and nutrients. Store the bottle in the refrigerator and use within 30 to 45 days after opening.
Best Chews: Vetoquinol Flexadin Advanced with UC-II Chews
These chews contain undenatured-type II collagen (UC-II), an ingredient Dr. Miscioscia says helps reduce joint inflammation and may even support the rebuilding of joint cartilage. A 2007 study found that UC-II can decrease osteoarthritis symptoms, reduce lameness, and increase physical activity and mobility in dogs.
Flexadin Advanced chews also include vitamin E, which offers additional anti-inflammatory benefits, along with omega-3 fatty acids. However, the omega-3 content is lower than in our best overall pick, and it comes from a mix of fish oil and flaxseed oil. Research suggests flaxseed oil may be less effective against inflammation for some dog breeds.
A major advantage is convenience: one chew per day is recommended for dogs and cats of all sizes and ages, making it easy to administer, especially in multi-pet households.
Best Tablets: NaturVet Glucosamine DS Plus Moderate Joint Care Chewable Tabs
For picky eaters, chewable tablets that can be crumbled into food or hidden in a pill pocket offer a practical solution. NaturVet Moderate Care Glucosamine DS tablets combine several active ingredients, including glucosamine and chondroitin. While current research on these compounds for canine joint pain is mixed and calls for further study, Dr. Miscioscia notes they may still provide benefits. “Glucosamine and chondroitin are the building blocks for part of what makes up joint cartilage and thus may help build up part of joint cartilage that is destroyed due to arthritis,” she explains.
These tablets also contain omega-3 fatty acids for anti-inflammatory support, plus vitamin C for collagen production, vitamin E as an antioxidant, and yucca, which some studies suggest helps reduce intestinal gas and stool odor.
Best Treats: NaturVet Advanced Care ArthriSoothe-Gold Level 3 Soft Chews
If you prefer giving your dog anti-inflammatory supplements in treat form or spreading doses throughout the day, these soft chews are an excellent choice. They contain a wide range of ingredients that research suggests may help with joint pain, including omega-3-rich green-lipped mussels, glucosamine, MSM, chondroitin, and Boswellia—a gum resin from the frankincense tree with demonstrated anti-inflammatory properties.
NaturVet is a highly trusted brand, and these chews carry the NASC seal while also being independently tested by ConsumerLab for quality, potency, and purity. Most dogs enjoy the taste despite the strong rosemary scent. The main drawback is cost, particularly for larger dogs requiring higher daily doses.
Best Powder: Wholistic Pet Organics Joint Mobility GLM + Enhanced Multivitamin
For dogs that do best with a powder mixed into their food, this formula provides 749 mg of total omega-3 fatty acids from fish, green-lipped mussels, and flaxseed. It also includes glucosamine and MSM for additional joint support, plus vitamin C for collagen production and added prebiotics and probiotics to promote healthy digestion.
The powder form allows for precise dosing, with small portions ranging from one teaspoon to two tablespoons depending on your dog’s size. The manufacturer recommends dividing the daily dosage evenly across meals, and most dogs won’t notice the small amount added to their food.
What to Look for in Joint Supplements for Dogs
Dog supplements, like human supplements, aren’t regulated by the FDA. This means there’s no guarantee of quality or effectiveness without careful evaluation. Consider these key factors before purchasing:
Active Ingredients: Research consistently supports marine-sourced omega-3 fatty acids for relieving joint pain by reducing inflammation. Plant-based sources like flaxseed are generally less effective. Some evidence supports undenatured-type II collagen (UC-II) and CBD, while other promising ingredients—such as avocado/soybean unsaponifiables, curcumin, Boswellia serrata, eggshell membrane, astaxanthin, and fortetropin—require more research.
Third-Party Testing: Independent testing is essential since no governmental oversight confirms label accuracy. Dr. Miscioscia says the NASC seal is the most important third-party certification to look for, indicating high safety and quality standards. ConsumerLab testing is also valuable for verifying purity, potency, and brand integrity.
Quality Seal: The NASC seal is especially valuable because it confirms that a manufacturer has passed independent audits, adheres to strict quality control, and undergoes random product testing.
Veterinary Approval: Always consult your veterinarian before starting any supplement. Your vet knows your dog’s full health history and can determine safety and appropriate dosing.
Dosage Level: Proper dosage depends on the specific ingredients and your dog’s size. While packaging provides recommended doses, your vet can give personalized guidance.
Price: Higher cost doesn’t guarantee better quality. Effective joint supplements are available for as little as $0.50 per serving.
Calories: Maintaining a healthy weight is the most important factor in managing arthritis. Many chews, treats, and omega-3 supplements are calorie-dense, so discuss overall calorie intake with your vet if your dog is overweight.
Health Restrictions: Dogs with food allergies need extra caution with flavoring ingredients. MSM and high doses of fish oil can cause stomach upset or diarrhea. If your dog is on blood thinners, avoid products with MSM or large amounts of vitamin E.
Dog Joint Supplements FAQs
Do dog joint supplements actually work?
Yes, when chosen correctly. Dr. Miscioscia confirms that the right joint supplement can be highly effective for dogs with arthritis. The best options contain marine-based omega-3 fatty acids, like our top pick, Pet Honesty Wild Caught Omega-3 Fish Oil, which is third-party tested, affordable, and made with four types of marine fish oils.
Will a joint supplement help with injury recovery?
In theory, but most supplements take two to three months to become effective. If your dog experiences a muscle strain, starting a marine-based omega-3 supplement likely won’t ease immediate pain. However, if your dog is already taking one, it may help reduce acute inflammation. Starting a supplement as a preventive measure may also help since strains can contribute to future joint instability.
Is Dasuquin better than Cosequin?
Both are popular brands from Nutramax Laboratories. Most of their formulas rely on glucosamine and chondroitin, which have limited research support. However, Cosequin for Dogs with MSM Plus Omega-3 Fatty Acid Soft Chews contains marine-based omega-3s, the ingredient most strongly supported by research for relieving pain in arthritic dogs.
Is glucosamine or chondroitin better for dogs?
Neither is considered more effective, and they are almost always combined. Current research suggests glucosamine and chondroitin may have limited impact on joint pain, while omega-3 fatty acids show stronger evidence of benefit. Look for supplements that include marine-based omega-3s alongside these traditional ingredients.