Before any nutrient (including iron) can enter the bloodstream it must first be taken up by the nutrient-absorbing cells in the gut. Phosvitin peptides have 14x more entry ports (cell transporters) into each nutrient-absorbing cell than iron alone.
‍
When bonded to phosvitin peptides, iron rides "piggy back" into the nutrient-absorbing cells. The bond creates 813% greater iron uptake and leaves less than 2% of the unabsorbed iron versus an equivalent dose of other iron supplements. Compare this to regular supplements that leave over 98% more iron in the gut, incapable of being absorbed, causing lower efficacy and multiple unpleasant side effects.