On Auwhat is the difference between iron bisglycinate and ferrous gluconateg. 25, 2015, China Food and Drug Administration (CFDA) released the “Announcement on Further Standardization of Health Food is ferrous fumarate ironNamingiron bisglycinate 15 mg”, wis ferrous gluconate a good form of ironhich shall be formalliron bisglycinate 25 mgy implemented from the day of announcement.