Doctor’s Best High Absorption Iron – 27mg (120 Tablets) | Ferrochel® Chelated Iron. Ferrochel® ferrous bisglycinate chelate (100% chelated). Iron (as Ferrous Bisglycinate Chelate) (Ferrochel®): 27mg. Doctor’s Best High Absorption Iron provides100% chelated iron usingFerrochel® (ferrous bisglycinate chelate) fromAlbion Minerals™.