SANDERSON® Superior Organic Iron has a low risk of gastric upset or constipation as the form of iron used, ferrous fumerate, is more easily absorbed. Iron-rich superfood Pumpkin Seed is also included. Ferrous Fumarate does not act as a Vitamin E antagonist. Vitamin C is added to assist absorption of the iron; Vitamins B6 and B12 are included to support the formation of healthy red blood cells. A maintainance dose of Folic acid is included to support pre-conception requirements for this nutrient, and to further assist iron absorption.