Dear all, I'd like to give an update. I started to take iron supplement (65g iron +Vitamin C) per day orally since Feb 22 when I was found to be deficient on iron. I rechecked my blood on March 30: my iron has increased to 72 (from 25 on Feb 22), ferritin has increased to 22 (from 6.5), and saturation has increased to 19% (from 6%). Doctor now asked me to take iron tablet (65 mg) every other day. I've also been taking vitamin B12 (1000 mcg) everyday since Feb 22, and doctor asked me to continue B12, even though my B12 is now in normal range (it was on the lower end of the normal range on Feb 22). I hope this information helps!