ENP'S(Effective Natural Products) Glucosomine is a formula containing Glucosomine to lower joint pain and create healthy joints, Chondroitin to lubricate, MSM for anti-inflammatory properties, Horsetail which is an herb high in mineral Silica for building bones, tendons and ligaments, proline, an amino acid for cartlage and tendons, Boron-a trace mineral for building bones, Grape seed extract which is an antioxidant with a positive effect on connective tissue during aging and Maganese to promote the production of Synovial fluid for joint lubrication. ENP,s GlucosominePlus is from vegtable source and not shellfish!