Hyaluronic acid is a glycosaminoglycan and long-chain polymer of disaccharide units of Na-glucuronate-N-acetylglucosamine and widely exists in all kinds of interstitial substances. In 1934, the hyaluronic acid was separated from bull's eyes by Meyer in USA. In the early years, hyaluronic acid was mainly extracted from the umbilical cords and cock's combs, but now it's by microbial fermentation...

It's a kind of semisynthetic glycopeptide polysulfate by sulfating of glycopeptides extracted from pig duodenum. It has many bioactivities of mucopolysaccharides such as anti-tumor, anti-virus, anti-atherosclerosis, reducing blood lipids and so on. It has the distinctive curative effects for peptic ulcer and widely used for the clinical treatment of gastric and intestinal mucositis because of its strong activity of anti-peptic ulcer...