Why does NS use only Glucosamine HCL?
There are four possible sources of Glucosamine: Glucosamine Hydrochloride, Glucosamine Hydroiodide, N-acetyl Glucosamine, and Glucosamine Sulfate, only two of them are recommended, the Hydrochloride and the Sulfate versions. The two glucosamines are identical in their effects, though the Hydrochloride version is more cost effective as it is a richer source of Glucosamine.