To the tanning bed girl - I ALWAYS feel worse if I don't see sun for 1 day. I don't know how people survive indoors. They can't be strong.
I don't get what's so complicated about getting everyones level to at least 50. 2000i.u. gel caps are so tiny & cheap when you wait for buy 1 get 1 free.

Get tested, if say your level's 20, take 4000iu/day for a month & get checked again. Remember it's aborbed & stored in fat so levels don't fall off quickly.

Also everyones different. My breast cancer survivor friend was scribed 5000/day cause her body's level just wasn't going up on 2000. Something like that just know 2000iu/day to me isn't 2000i.u./day to anyone else.
2000/day is holding me in the upper 80's and i'm tan.

10,000i.u's is what they say 1/2hr full body exposure white person produces right (darker skin absorbs less so african american's really need to get checked)?