Written by Morgan, @Team Amandean
There exists an ideal world in which those of us who take multiple supplements take each one separately, spaced and timed perfectly from all the other supplements -- in order to ensure that no vitamin or mineral we take could potentially have any interaction with any other. Take a supplement, wait a few hours, take another.
Unfortunately, this world doesn't exist for most people because, despite our best efforts to change the clock, there are only 24 hours in the day, plus we do have other things to do during the day other than take supplements. (There exists an even-more ideal world in which everyone eats such perfectly nourishing food, with the perfect quantities and quality of all vitamins and minerals we need for maximal health, so that supplements wouldn't even be needed -- but we do live in the era of super-processed food everywhere, so that perfection is hard to achieve, which is why supplements are essential,in my unbiased opinion.)