Dasuquin for Large Dogs Chewable Tablets is a premium joint health supplement that contains a combination of glucosamine hydrochloride, chondroitin sulfate and avocado/soybean unsaponifiables (ASU) to help support your pet’s joints. In fact, research has shown that the combination of glucosamine, chondroitin sulfate, and ASU works better than glucosamine and chondroitin sulfate alone! Dasuquin joint health supplements are brought to you by Nutramax Laboratories Veterinary Sciences, the #1 veterinarian recommended supplement company. ▼Source: Among veterinary brands. Survey conducted among small animal veterinarians who recommended oral joint health supplements. *Source: Survey conducted among small animal veterinarians who recommended animal supplements.