Fiiron ferrous fumarate contains 60 mg, while ferrous sulfate provides 5 mg. Other forms include iron bisglycinate and ferrous fumarate, with the addition of sodium EDTA for enhanced absorption. In this context, it’s important to consider the best way to take calcium citrate, as it can affect the overall effectiveness of iron supplementation. For optimal results, incorporating the best way to take calcium citrate into your routine can improve mineral absorption. Remember to follow the recommended guidelines to maximize the benefits of both iron and calcium, ensuring you apply the best way to take calcium citrate consistently.