Note BBE: 10/2014 MSM (Methyl Sulfonyl Methane) is a naturally occurring sulphur which is thought to help in the maintenance of healthy joints. Joint Plus MSM contains a massive 1000mg of this extremely popular ingredient which is fast gaining recognition as one of the most important supplements for joint care. MSM acts as a major building block of glycosaminoglycans which is the key structural component of joint cartilage and connective tissue. The natural levels of MSM produced in the body are often quite low and reduce with ageing. Therefore, supplementation provides a great way of keeping your levels high to provide extra protection. These easy to consume tablets make the ideal supplement for those concerned with joint health.