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by karmajunkie 3012 days ago
10k IU is available OTC, so its not a prescription, but I do take it on my doctor's recommendation. I don't get a lot of sun, especially in the winter, and I've had chronic deficiency of D3, so I supplement at higher levels than what I'd get in your average multivitamin. 50k IU is what I was prescribed for two months to get me above the minimum recommended blood levels, and it barely did that.

I do also get my D3 levels checked annually as well, as should anyone with a diagnosed deficiency.