Iron bis-glycinate is a well-studied, 100% fully-reacted, patented form of iron exclusively from Albion® Laboratories. The amino acid glycine is actually one of the two starting materials the body uses to synthesize hemoglobin. Therefore, Iron Glycinate™ contributes two key factors. This form of iron has higher bioavailability, lower toxicity, less food reactivity, less food interactions and has a longer shelf life than any other common form of iron.*