MSM (Methyl Sulphonyl Methane). MSM Plus combines MSM, glucosamine hydrochloride & vitamin B6 in a tablet form & is a useful supplement for joint & skeletal health.• MSM helps to support impulses along nerve fibres • MSM may help maintain muscle reflexes • Glucosamine hydrochloride is a key component of synovial & bursal fluid, connective tissues, ligaments & tendons • Glucosamine hydrochloride is a component of mucous membranes lining the digestive, respiratory & urinary tracts • Vitamin B6 is essential for cellular repair & growth