Can You Take Too Much Vitamin D?
Yes, you can take too much vitamin D. Here's the upper limit, the signs of excess, and how to avoid stacking your way over it.
Yes, you can take too much vitamin D. Here's the upper limit, the signs of excess, and how to avoid stacking your way over it.
Cholecalciferol or ergocalciferol? How vitamin D3 and D2 compare at raising blood levels, and what vegans should know.
Morning or night, with food or without? What the research says about the best time to take vitamin D, and what matters more.
1,000, 2,000 or 5,000 IU? Here's how common vitamin D3 doses compare with the RDA and the upper limit, and who each one is for.
There's no validated "K2 deficiency" checklist. Here's what vitamin K deficiency really looks like, who's at risk, and what low K2 might mean.
Taking vitamin D3 daily slowly raises your blood levels and supports calcium absorption. Here's what the big trials say it does, and doesn't, do.
Vitamin K2 has a strong safety record, but there's one interaction everyone should know about. Here's the full, honest rundown.
What daily vitamin K2 actually does in your body, what the research shows (and doesn't), and who should check with a doctor first.