Dasuquin is the number one veterinarian recommended joint health brand that goes beyond standard glucosamine supplements. Dasuquin combines NMX1000 ASU(avocado/soybean unsaponifiables) and decaffeinated tea with Glucosamine and sodium chondroitin sulfate to provide a comprehensive joint health formula. MSM (methylsulfonylmethane), a source of sulfur used to support cartilage, adds to the multi-prong approach to joint health support. Research has shown that its specific glucosamine hydrochloride and low molecular weight chondroitin sulfate have demonstrated synergy in stimulating cartilage matrix production, while ASU also acts synergistically with glucosamine and chondroitin sulfate. Dasuquin with MSM chewable tablets provide a tasty and convenient option for supporting your dog's joint health!" * Source: Among veterinary brands. Survey conducted among small animal veterinarians who recommended oral joint health supplements brands in US.