Spanish version of our best-seller, MSM: On Our Way Back To Health with Sulfur! MSM (methyl sulfonyl methane), is a rich source of organic sulfur, the 3rd largest existing mineral in our bodies important for connective tissue regeneration. Beneficial for arthritis and other joint problems, allergies, asthma, skin problems, TMJ, periodontal conditions, pain relief, and much more! Includes important "How to use" directions.