I have anemia due to unknown cause. I was transfused with 2 pints blood and 2 bags iron dextran. I now take iron, 65mg, 3 times daily, vit c 500 mg once, b-12 and lots of folic acid. I also have IPF (fibrosis) and am 7 months into recovery from abdominal surgery for ventral hernia caused by two other surgeries for volvulus(twisted bowel) and perforated bowel. I quit 45 year smoking habit Dec 2015. hemoglobin still only slightly above 9. Ht. 5 11, wt 175. 24/7 oxygen. any exersion causes severe drop in O2. Diet Pretty good. What else can I do until cause is found hopefully through upcoming endoscopy and colonoscopy,Nov 7 ? Also getting intravenous iron tomorrow and again next week from oncologist who will look at test results from GI Dr.