I know I’ve mentioned this before but there are some foods you should avoid eating/drinking at the same time that you take your thyroid meds. Here are a couple of links related to this topic. I would think that coffee/tea kinda fall into the same category, if the caffeine from coffee affects your meds, so would the caffeine from tea, soft drinks, etc. Keep in mind that many GREEN teas have more caffeine than coffee. So just because you are not a coffee drinker, does not mean you shouldn’t monitor what you eat/drink!