Tableted with these natural ingredients: microcrystalline cellulose, silicon dioxide, stearic acid, hydroxypropylmethyl cellulose, cellulose gum, titanium dioxide, glycerin. +Albion Process Amino Acid Chelate Patent No. 4,599,152 Chelazomes ++A unique form of chelated iron (iron bisglycinate) formulated for maximum absorption without the gastrointestinal irritation or constipating effects that often accompany iron supplementation. Albion Process Amino Acid Chelate. Patent No. 4,599,152 Chelazomes. +++Albion Process Amino Acid Chelate Patent No. 5,292,729 Chelazomes. Buffered Chelates Patent No. 4,167,564