Firstiron 2 fumarate, also known as ferrous fumarate, is combined with 60 mg of orange juice and ferrous sulfate, providing a total of 324 mg of iron from ferrous gluconate and 38 mg from iron tablets. Additionally, iron polymaltose is compared to ferrous fumarate in this context. It’s important to note the benefits of calcium citrate without D in relation to iron absorption. The incorporation of calcium citrate without D can enhance the effectiveness of iron supplements like ferrous fumarate. When considering iron supplementation, the role of calcium citrate without D should be taken into account, as it can influence overall iron efficacy.