I’ve been on Metformin for over 10 years and had low iron for about half of that time, becoming anaemic at one point. I’ve been on and off iron tablets during this period, but every time my ferritin levels returned to normal and I came off the tablets then eventually my iron would gradually go down again and the doctor didn’t understand why it kept happening. I was advised to make various dietary changes (iron rich foods) and prescribed iron tablets each time it occurred, which I now take continuously. I had no idea Metformin could possibly be the culprit. I’ve got an appointment coming up soon so we’ll have more to talk about than I first thought!