Move Free Advanced + MSM & D3 combines heritage joint support ingredients with the clinically studied mineral complex Uniflex. This formula contains Glucosamine, Chondroitin, Uniflex, HA, MSM and Vitamin D3 to help support mobility, comfort, strength, flexibility & lubrication.* PLUS it provides extra cartilage support (with MSM) and immune health & bone support (with Vitamin D3).* WHY GLUCOSAMINE: Glucosamine is key for the formation of cartilage (essential building block of joints). Glucosamine helps contribute to healthy joint fluid that supports joint lubrication & smooth movement, while also supporting joint comfort, mobility and flexibility.