Cofactors are needed when taking high-dose vitamin D - video
How To Safely Increase Vitamin D Levels (Supplements, Sunlight & Cofactors)

00:00 Side Effects Of Vitamin D Overdose
01:19 Raising Vitamin D With Sunlight
03:53 Vitamin D Supplements & Foods
05:19 Cofactor #1: Magnesium
05:53 Cofactor #2: Vitamin K2
06:26 Cofactor #3: Vitamin A
07:13 Cofactor #4: Potassium
07:49 Cofactor #5: Sulfur
08:49 Summary
VitaminDWiki - Vitamin D Cofactors in a nutshell table show the importance of each
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