Solgar Extra Strength Glucosamine Chondroitin MSM with Ester-C Tablets is ideal for anyone seeking extra nutritional support for their cartilage and joints. This formula is specially designed to nourish your joints and cartilage and provides a lubricating factor and helps maintain flexibility, mobility and comfortable movement. This formula also contains Ester-C to support joint health by helping to maintain enzymes necessary for collagen formation in their active state.