Time Release Iron tablets, supplied by Douglas Laboratories, are specially designed to provide 54 mg of carbonyl iron (Ferronyl®) per serving for a 6 to 8 hour period. Carbonyl iron is easily absorbed and has a low toxicity.
Ferrous sulfate is a type of iron. You normally get iron from the foods you eat. In your body, iron becomes a part of your hemoglobin and myoglobin. Hemoglobin carries oxygen through your blood to tissues and organs. Myoglobin helps your muscle cells store oxygen.