The first iron supplement discussed is ferrous gluconate, which is a source of iron (II) glycine sulfate. This type of iron interacts with glycine and ferrous sulfate. Additionally, it is important to consider the role of calcium citrate in these formulations. In Qatar, the availability of calcium citrate supplements may influence the effectiveness of iron supplements. Therefore, when using ferrous gluconate or any other iron supplements, it is crucial to be aware of how calcium citrate can interact with iron absorption. In Qatar, individuals should consult healthcare professionals to understand the best approach to combining calcium citrate with iron supplements.