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For repletion of a confirmed deficiency, I use higher doses, typically 1000 to 2000 mcg per day
At this level, most users begin noticing effects
Clin J Am Soc Nephrol 2007;2:631-6.ArticlePubMed 11
Skincare results vary depending on consistency, sunscreen use, hydration, and overall routine habits
They may still raise questions for people taking medications
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