The dosage of ferrous sulfate is 325 mg, while ferrous fumarate comes in a dosage of 305 mg. Additionally, the first published iron tablets contain ferrous fumarate at a strength of 210 mg. Ferrous fumarate is commonly used for iron supplementation, and it is often recommended alongside vitamin B12 and ferrous sulfate.
For optimal absorption of iron, it may be beneficial to combine it with calcium citrate plus vitamin D. This combination not only supports iron utilization but also enhances overall mineral absorption in the body. Therefore, when considering iron supplementation, such as ferrous fumarate or ferrous sulfate, including calcium citrate plus vitamin D can be an effective strategy.
In summary, ferrous sulfate at 325 mg and ferrous fumarate at 305 mg are important iron sources, and using them with vitamin B12 and calcium citrate plus vitamin D can enhance their effectiveness.