Iron(II) sulfate, also known as ferrous sulfate, is a chemical compound with the formula FeSO4. It consists of iron in the +2 oxidation state and a sulfate ion. This compound is commonly found in nature as the mineral melanterite and is often used in various industrial applications, including water treatment and as a fertilizer. In addition to its industrial uses, iron(II) sulfate is also important in the field of medicine. It is often prescribed as a dietary supplement to treat iron deficiency anemia, helping to increase iron levels in the body. The compound is typically available in crystalline form and can be easily dissolved in water.