In nearly every case, nutrients (meaning vitamins and minerals) you ingest in excess of the RDAs are *minimums*. If you get too much that your body can't use, it simply dumps it.
You have some reason to think carefully about vitamin A, though, because it's one of the fat-soluble vitamins (A, D, E, and K) which can potentially build up to levels higher than are good for you. Your body will store those instead of eliminating them.
That said, our RDAs are, beyond just being minimums, also lowball according to most other sources. So that minimum (and the associated maximum) may not be indicating toxic levels. In most cases, the "safe" range is many (like, hundreds) times higher than what the upper limit is listed to be.
Perhaps you could consult with your healthcare team, or do some more research online, to determine what would be appropriate in your individual case. RDAs are, after all, meant to apply to the largest portion of the people they're recommended for (which means the group in the ~80% range). That may not be you.
Edited by: EXOTEC at: 4/21/2014 (12:45)
...the problem with people these days is
they've forgotten we're really just animals ...
We did not create the web of life; we are but a strand in it.
~attributed to Chief Seattle
We don't have souls. We ARE souls. We have bodies.
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