How can i get rid of my dark circles?

I get really dark circles under my eyes. I heard low iron may have something to do with that, the doctors found out I've been Anemic and I have been taking Iron supplements but it hasn't lighten up. I do get plenty of sleep (8-10 hours a night). I also hear its hereditary but only one of my parents has dark circles. Anyway is there any makeup that can cover it up really good or is there anything I can do to get rid of them?