Thorne Iron Bisglycinate Capsules provide 25 mg of elemental iron per serving in a well-absorbed chelated form to support healthy red blood cell formation, oxygen transport and normal energy levels. The formula uses Ferrochel Iron Bisglycinate, in which iron is bound to glycine to support gastrointestinal absorption and improve tolerability compared with some conventional forms of iron. Adequate iron intake is particularly important for individuals with increased requirements, including menstruating women, athletes, frequent blood donors and those following vegetarian or vegan diets. The formula is NSF Certified for Sports.