Whats this business about sulphate and hydrochloride?
The glucosamine – which is the so called active ingredient – needs something to latch onto to be transported around the body for absorption and final processing. It is very commonly bound with sulphate. Most research has been done on this combination, and it is believed that glucosamine sulphate is effectively absorbed by the digestive system. Less research has been done on glucosamine hydrochloride, and indeed some people are of the opinion that glucosamine hydrochloride is less easily absorbed by the digestive system. My advice: stick with glucosamine sulphate.