Fe-Zyme is a supplemental source of iron in a highly bioavailable form, combined with synergists known to aid absorption and utilization such as vitamin B12, copper, ascorbic acid, and plant culture. Fe-Zyme contains the ferrous form of bisglycinate. Ferrous bisglycinate is a nutritionally functional mineral amino acid chelate that not only has superior bioavailability but is also easy on the gastrointestinal tract.