Hi Krw, I take something called Ferrous Fumarate and take 2 300 mg. tablets a day for my anemia. Before I began taking it I did not have the energy to climb the stairs.
I am not saying that I am 100% better for taking this particular medication but I do have more energy.
I have my hemaglobin tested regularily as it can fall really low sometimes.
If your iron is really low you could ask your doctor about "IV iron supplements", which I have also had.
Hope this helps.