Slow Fe 45mg Iron Supplement is the #1 doctor recommended iron supplement for iron deficiency. Iron is an essential mineral that is needed to make hemoglobin, the part of red blood cells that delivers oxygen throughout your body to carry out many important functions. Slow Fe iron supplement tablets feature a special controlled release system that delivers the high potency iron you need, while still being gentle on your stomach. These Slow Fe vitamins & supplements contain 45mg of elemental iron, which is equal to 142mg of ferrous sulfate per tablet. Simply take one easy-to-swallow slow release iron tablet daily as recommended by a doctor. Slow Fe iron supplements can be taken with or without food, but they're best absorbed on an empty stomach, either one hour before or two hours after meals.