Iron supplement So I'm waiting for the nurse to call me back, but they called today and told me my hemoglobin was a…

Iron supplement

So I'm waiting for the nurse to call me back, but they called today and told me my hemoglobin was a little below for the 3rd trimester so she wanted to me take an iron supplement called slow fe..she mentioned she thought the mg was 325, everything I found at the store was 45 mg which is a huge difference..if your on an iron supplement what do you take and how many mg is it?