Multivitamin/Multimineral supplements are provided for supplementing iron and desirable nutrients in the diet of mammals. The supplements include an iron-amino acid chelate, a form of iron more bioavailable than traditional iron salts. The supplements may further include a pharmaceutically accepted salt form of iron as well as other nutritional vitamins and minerals. The supplements are useful for providing iron for pregnant and lactating females as well as for persons suffering from anemia.