Advanced strength. 600 mg glucosamine. 200 mg MSM. 100 mg chondroitin. 50 mg vitamin C. NASC: National Animal Supplement Council. Quality seal. Proactive. Sensible. Solutions. New. Pro-Sense Joint Solution Chews offer 600 mg of glucosamine combined with 200 mg MSM, 100 mg chondroitin and 50 mg vitamin C per two chews, which helps support healthy joint function. Our advanced strength formula is suitable for everyday use and for dogs of all sizes. Proactive Wellness: For a proactive approach to your dog's overall wellness, add a Pro-Sense Skin & Coat Solution to your daily routine. Glucosamine. MSM. Chondroitin. Vitamin C. Questions or comments? Call 1-800-645-5154 or visit our website at www.prosensepet.com. For use in dogs only. Recommended to help support healthy joints and mobility.