I've been slowly trying to add some vitamins/supplements and I seem to react to everything and I think part of the reason is that most vitamins/supplements seem to affect the level of some other vitamin and then cause some sort of symptom due to that deficiency. It's exhausting researching it all. I take D, so I apparently need to also take zinc, which then may affect copper, and with D I also need to vitamin a, which may then affect vitamin e, etc. etc.It's seems like a never-ending loop. And of course, there's also the issus of what to take with food, what to take with fat, what supplements to not take at the same time, etc. Is there any sort of chart somewhere that shows if you take such and such supplement you should also take these other supplements and how to take them (with food/without food, with other supplements, etc.)? If not, someone should make one and give or sell it to us sickies. I think it would be extremely useful. Any tips?