I am taking menopausal hormone therapy (mht). does that affect how much iron i should have?

Yes: Take iron only if you are anemic and iron deficient. Excessive iron can cause other problems.

No.: Most women who take HRT do so in a "continuous" regimen that does not result in menstrual-like bleeding. Therefore, no blood (and iron) is lost, and one's iron needs should not change. If a woman takes a "cyclic" regimen that causes monthly periods, then one's iron needs would increase in proportion to the amount of blood lost each month.