Found throughout the human body, the antioxidant, anti-inflammatory ingredient has long been used as an oral supplement to relieve arthritis. Research shows that topical application may reduce hyperpigmentation and boost hyaluronic acid production, smoothing fine lines and wrinkles. Glucosamine (C6H13NO5) is an amino sugar and a prominent precursor in the biochemical synthesis of glycosylated proteins and lipids. Glucosamine is part of the structure of two polysaccharides, chitosan and chitin. Glucosamine is one of the most abundant monosaccharides. Produced commercially by the hydrolysis of shellfish exoskeletons or, less commonly, by fermentation of a grain such as corn or wheat, glucosamine has many names depending on country.
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