Ferrous fumarate 210mg tablets contain ferrous fumarate, which is similar to folic acid in terms of absorption. The absorption of iron fumarate is an important aspect of its effectiveness. Additionally, iron 2 gluconate and ferro f tablets are also available options for iron supplementation. It’s worth noting that calcium 315 200 can impact the absorption of these iron supplements, so it is essential to consider this when planning your intake. Overall, when using ferrous fumarate, it’s crucial to be aware of the role of calcium 315 200 in enhancing or inhibiting iron absorption.