SuperSmart USA LLC NAG Supplement 1500mg - SuperSmart | Advanced N-Acetyl Glucosamine | Non-GMO & Gluten Free - 90 VegetariaNAG N-Acetyl Glucosamine is an amino saccharide derived from glucose and L-glutamine, serving as the body’s natural precursor to hyaluronic acid, a key component of synovial fluid in joints. $27.00Supersmart.comDelivery: in USA ReportBuy!