Reumadol FLEX is a food supplement that contains a complex of plants such as harpago and bamboo, MSM (Methylsulfonylmethane), hyaluronic acid, collagen, vitamin K and also a high content of manganese and vitamins D and C. normal collagen formation for normal bone and cartilage function. Vitamins D and K and manganese contribute to the maintenance of normal bones. Manganese also contributes to the normal formation of connective tissues.