We get this question constantly: can you take too much vitamin D, and why does it need to be paired with something else? Vitamin D acts more like a hormone than a vitamin, and its job is to push calcium into your tissues. Without K2 directing traffic, that calcium can end up in the wrong places, like your arteries or kidneys, instead of your bones where you actually need it. D3 and K2 work as a team. One without the other isn’t doing its full job. Share this with someone who takes vitamin D alone – make sure they watch!