Advanced joint support & joint health from highly researched ingredients Improved comfort & mobility No artificial flavors, synthetic colors, or preservatives Does GlycoFlex® actually work for dogs? Not only do we have thousands of happy customers who love using GlycoFlex® for their dogs, GlycoFlex® Stage 3 is clinically proven to increase hind leg strength by up to 41% in just four weeks!* This formula for medium and large dogs is made with green-lipped mussel, glucosamine, MSM, and other beneficial nutrients to support hip & joint health and mobility. Hydrolyzed chicken flavor is appropriate for pets with sensitivities to protein. Your dog can also enjoy the benefits of advanced joint support in GlycoFlex® Stage 3 Chewable Tablets, which may be suitable for sensitive stomachs. For our smaller canine friends, consider GlycoFlex® Stage 3 for Small Dogs (under 30 pounds). Its the same powerful recipe but formulated specifically for small-breed dogs. What is the difference between GlycoFlex® and GlycoFlex® Plus? Understanding pet joint health is key to understanding joint supplement ingredients and their strength. A wider variety of active ingredients + higher levels of those active ingredients = a more powerful supplement. GlycoFlex® Stage 3 is formulated with 1000 mg of glucosamine, 1000 mg of MSM, and 600 mg of green-lipped mussel per 2 chews GlycoFlex® Plus is formulated with all the above, plus 400 mg of chondroitin per 2 chews to deliver an extra boost of mobility support For best results, both of these GlycoFlex® supplements recommend a loading dose period of 4-6 weeks. Cant decide which of our GlycoFlex® joint support formulas is perfect for your dog? Take our helpful quiz! Does GlycoFlex® need a prescription? Nope! Since all GlycoFlex® products are supplements, not pharmaceuticals, theyre all available online or through your favorite local pet retailer. No prescription needed! Browse all vet-recommended joint supplements for dogs to find the formula, format, and flavor thats best for your dog. *Washington State University Study: The effects of GlycoFlex® 3 on a stable stifle OA model in dogs.