Blood Booster contains the highly superior iron bisglycinate, a true protein/ iron complex. The form of iron in this vitamin supplement is highly absorbable and does not induce iron-related digestive distress or free-radical problems.* It is best to avoid low quality forms of iron, such as ferrous sulfate, which can induce free radical damage and germ growth in the digestive tract. Ferrous sulfate can "break up" in the blood, is only 3% absorbed, and can cause digestive problems. Iron bisglycinate is a far superior and safe iron form.* Iron is the backbone nutrient for enhancing the building of oxygenated blood. Vitamins B6, B12, and folic acid are also needed to make healthy blood. Lacking any one of these three vitamins can cause red blood cells not to form properly. Blood Booster contains highly superior coenzyme forms of these nutrients. Since these special B-vitamins are already pre-energized, they require no contribution of body energy to make them work, which is a huge issue if a person is already fatigued from poor iron status.* Iron has recently been identified as a key nutrient in cells that enables thyroid/ zinc gene signals to function in metabolic pathways. A lack of iron inside cells may reduce up to 80 different gene signals that would otherwise be following "thyroid instructions." A lack of iron may handicap metabolism and cause metabolic fatigue.* Iron is an essential nutrient for any woman in child bearing years. The blood loss experienced during menstruation is another reason to consider taking the Blood Booster.