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Dietary SupplementN-Acetyl GlucosamineConnective Tissue SupportN-A-G™ N-acetyl glucosamine is an amino sugar (the building blocks of mucopolysaccharides). It is formed from L-glutamine and glucose. N-A-G forms the basis of complex molecular structures which are key parts of the connective tissues and mucous membranes of the body - tendons ligaments cartilage bone matrix skin joint fluid and intestinal lining.