Lactoferrin Powder helps regulate the iron that is absorbed into the body from the intestine. It may also seem to protect against infections from viruses, bacteria and fungi. These are commonly used lactoferrin for low iron levels during pregnancy and for preventing blood infections in premature infants. Lactoferrin Powder is also used for diarrhea, the common cold, and many other conditions that have no good scientific evidence to support these other uses.