"Cosequin is a nutritional supplement to help small dogs and cats maintain healthy joints. As pet age, it is common for their joints to become less flexible which impacts their mobility and quality of life. Cosequin is an exclusive formula to support and maintain the health of your pet's joints. Each capsule contains 250 mg Glucosamine HCl, 200 mg 95% Sodium Chondroitin Sulfate 5% Mixed Glycosaminoglycans, 16 mg Ascorbate and 2 mg Manganese."