I have been plagued with Anemia for a very long time. And when I say my hemoglobin levels were low, I mean they were about half of the normal low-end value that an adult male should have. So my doctor started me on Iron infusions on a weekly basis. After about 4 weeks we checked my hemoglobin levels again and they had gone up by about 3 gm/dL. Which made a huge improvement in my energy levels and complexion.But then I moved across the country and had to get a new doctor. The new doctor introduced me to these pills. Other Iron pills had upset my stomach in the past, and I didn't really get the absorption that the infusions had given me. So we measured before I started and my hemoglobin level, in the month or two that I had missed out on infusions due to the move, had dropped almost back down to where I had started.But after about a month of being on the NuIron pills I was back up to the upper level I was at from the infusions. The NuIron pills may be expensive, but they are much cheaper than having the infusions. The more I take these pills the better I feel (no more than 1 pill twice a day).I would highly recommend these to anybody with low iron levels, as I no longer look like and feel like a sick guy, just a normal guy. I will update when I get get my next blood test.