Holland & Barrett Glucosamine Chondroitin & MSM Tablets These tablets contain glucosamine, chondroitin and Methylsulphonylmethane (MSM). MSM is a naturally occurring source of sulphur, one of the major building blocks of glycosaminoglycans. 60 coated caplets Holland & Barrett Glucosamine Chondroitin & MSM Tablets These tablets contain glucosamine, chondroitin and Methylsulphonylmethane (MSM). MSM is a naturally occurring source of sulphur, one of the major building blocks of glycosaminoglycans. 60 coated caplets