A well rounded approach to iron supplementation is optimal . How much iron we absorb is greatly improved by vitamin C which you will also see in our formulation. To further maximize the benefit of the formula, and to also minimize the likelihood of constipation that frequently results from iron supplements, we have included several key herbs know for their positive effect on building the blood and maintaining regular bowel function. Each vegetarian suitable capsule includes: Vitamin C (calcium ascorbate, buffered), Yellow dock root - Rumex crispus, Folate (folic acid), Dandelion root - Taraxacum officinale, Vitamin B12 (cyanocobalamin), Alfalfa leaf - Medicago sativa, Iron (aspartate, ferrous succinate, ferrous fumarate), Nettles tops - Urtica dioica, Iodine (kelp)