MSM (Methyl-sulfonyl-methane) is a naturally-occurring sulphur compound found in our body. It helps to build proteins, enzymes and hormones. Besides, it is also an essential component for the formation of our connective tissues. As a supplement, it is safe, potent, non-toxic, and bioavailable. It has promising results in alleviating joint pain and inflammatory conditions including rheumatoid arthritis, osteoarthritis, connective tissue conditions, chronic muscle pain, fibromyalgia, tendonitis, carpal tunnel syndrome etc. Natural Factors uses a premium organic sulphur source for MSM and can be taken alone or in combination with glucosamine sulfate and chondroitin sulfate to provide maximum joint pain relief.