The initial product, a syrup containing 600 mg of ferrous fumarate and ferrous glycine sulfate with folic acid, is compared to several other iron supplements, including fermented iron bisglycinate versus ferrous bisglycinate chelate, as well as ferrous bisglycinate versus ferrous gluconate. Additionally, it is important to consider the side effects associated with ferrous fumarate 210 mg tablets. In the realm of dietary supplements, GNC calcium citrate is another option worth noting, as it can complement iron supplementation effectively. GNC calcium citrate can be beneficial for individuals seeking to enhance their overall nutrient intake, especially when combined with iron products. Thus, when evaluating the various forms of iron supplements, the inclusion of GNC calcium citrate can provide a balanced approach to health and wellness.