But as soon as I poured my iron supplement into the unsweetened iced tea, I could tell I needed to make a drink change to Orange Fanta. Mark it in your trip notes: don't ever mix liquid iron with unsweetened, swampy Florida water! You will lose your appetite. Anywho, I quickly drank the ironed up Fanta (I don't drink pop, so it was interesting!) and off we went on a waiting shuttle to the Magic Kingdom!