What is the difference between ferrous sulfate and ferrex 150?

Ferrex mainly contains a higher dose of iron. Remember to space out calcium within a least four hours a part from iron as well as no milk products when you take your iron dose, both prevent proper absorption. Some doctors believe that iron should only be taken once daily because that is the most it will be absorbed. I have a lot of people on iron two to three times daily but from what a doctor told me at work was that it absorbs the same by taking it daily as compared to multiple times. All about absorption. Remember iron stains the mouth as well.