The problem of iron overload (often caused by the hemochromatosis
gene, one of the most common genetic "abnormalities" in humans) is just
as common as the problem of deficiency, and far more damaging.
Don't treat yourself with any iron tonic until you know your body's
iron status. That takes some blood tests, but they are worth the
money. Remember: your body has no way to dump excess iron you put
into it, the way it does for too much potassium or magnesium. So you
can harm yourself with iron by figuring that if a little is good, a lot
is better. Women of childbearing years, on average, need extra iron.
Everybody else, on average, doesn't. But to find out for sure, you
need to see your doctor again.