The Inside Scoop…
Pure glucosamine is very hygroscopic and degrades rapidly when exposed to moisture. To avoid this, glucosamine needs to be bound to a stabilizer to be sold commercially. Glucosamin makes up 63% of Glucosamine Sulfate and 83% of Glucosamine HCL, the two most common “agents” that glucosamine is bound to ensure its stability. The first clinical trials were conducted using the sulfate form which has made it most popular but studies do not indicate the HCL form is as effective.