IRON FERRIC POLYSACCHARIDE, CAP 150MG (100/BT 12BT Ferric X-150 Capsules Polysaccharide iron. 150 mg High-potency iron supplement. Compare to the active ingredient in Niferex®-150 original formula. Not Made with Natural Rubber Latex. Packaged: 100 Per Bottle, 12 Bottles Per Case Niferex®-150 is a registered trademark of Ther-Rx Corporation.