Use radial in a sentence. of or like a ray or rays; branching out in all directions from a common center. having or characterized by parts that branch out in this way. of or situated like a radius. Anat. of or near the radius or forearm.
Quick Answer. Iron supplements typically take effect after two months of consistent doses. Supplements should be taken for six to 12 months to rebuild the body's iron reserves following a deficiency, according to MedlinePlus. Continue Reading.
Iron can be taken in pill and liquid forms. Iron supplements that work quickly add more of the metal to the body, so they may cause more constipation. Slow-release forms of iron may be easier on the digestive system but not be absorbed as effectively.