What Does Lactoferrin Do?Jarrow Formulas Lactoferrin is an important immune supporting glycoprotein that is found in breast milk, tears and other body fluids. One of the biological activities of lactoferrin comes from its powerful ability to bind iron (300 times that of serum transferrin), which promotes the growth of beneficial bacteria. Moreover, digestion of lactoferrin by gastric pepsin liberates the immune-supporting peptide lactoferricin B.IngredientsLactoferrin Other ingredients: Cellulose, magnesium stearate (vegetable source) and silicon dioxide. Capsule consists of bovine gelatin. Contains. Milk (Whey). No wheat, gluten, soybeans. egg, fish/shellfish, or peanuts/tree nuts. Directions For UseTake 1 capsule per day with food or as directed by your qualified healthcare professional.  PrecautionsIf you have a medical condition. are pregnant, lactating, trying to conceive, under the age of 18, or taking medications, consult your healthcare professional before using this product. Keep out of the reach of children.