First, let’s compare the uses of ferrous gluconate and iron glycinate with ferrous fumarate and ferrous sulfate (FeSO4·7H2O). The dosage of ferrous sulfate typically recommended is 325 mg. It is important to consider how these iron supplements might interact with other minerals, such as calcium citrate 650, which can impact iron absorption. When taking iron supplements, including ferrous fumarate and ferrous sulfate, it’s advisable to monitor the intake of calcium citrate 650, as excessive calcium can hinder the effectiveness of iron absorption in the body. Thus, understanding the proper usage and dosage of these iron supplements alongside calcium citrate 650 is essential for optimal health benefits.