I had a really hard time tummy-wise with the iron too. Slow-Fe is good but even it was a bit too harsh, so I took it every other day and sometimes every third day. But when I was super low around 6 or 9 or something (can't quite remember) I would take two in a day and it wouldn't bother my tummy at all. I was so low in iron my body was desparate. Another symptom I had of low iron (I wasn't on any other meds at the time) was I could fall asleep at the drop of a hat. It was so fast that I didn't ever remember just laying there waiting to fall asleep, just kerplunk and I was out like a light! After taking the iron I would lay down, take a little time to relax and then sleep. Hope this helps.

Ice