Ferrous sulfate paired with orange juice is an effective combination, while ferrous gluconate, at a dosage of 150 mg, serves as a milder alternative. Comparatively, ferrous fumarate at 350 mg offers another option for iron supplementation, especially when combined with folic acid. It’s essential to consider the benefits of calcium citrate with vitamin D, which is available at Walgreens, as it can enhance the absorption of iron. Incorporating calcium citrate with vitamin D from Walgreens into your diet can be beneficial alongside iron supplements like ferrous gluconate or ferrous fumarate. Overall, the right combination of iron and calcium citrate with vitamin D can support overall health and improve iron absorption.