Doctors Formulas Arthridol joint formula treats inflammation, provides support to tendons and ligaments, increases the content of hyaluronic acid in the synovial fluid, ensures joint lubrication and restores cartilage. Its composition contains MSM, glucosamine sulfate, chondroitin sulfate and type II collagen. Thanks to these ingredients, the formula is ideal for people suffering from post-traumatic pain, arthritis, rheumatism and joint problems in general.