Glucosamine DS (Double Strength) with MSM and Chondroitin Liquid Recommended for added joint support for healthy hip & joint function Glucosamine, Chondroitin and MSM Veterinarian formulated and recommended to support healthy hip and joint function. Helps to maintain joint flexibility and alleviate aches and discomfort associated with exercise. Glucosamine is an easily absorbed natural substance that may stimulate the production of proteoglycans which help maintain the health and resiliency of joints and connective tissues. Contains important antioxidants to help protect against free radical that cause cellular damage.