The importance of vitamin k with d3:
https://www.balancedwellbeinghealthcare.com/are-you-taking-vitamin-d3-dont-forget-vitamin-k/
Search on Amazon for Vit. MK7 vitamin K2. I buy the NOW brand.
I use 5000 D3 about 3 X a week. I don’t use any other vitamins, for a number of reasons. I can’t go in direct sun more than a few minutes so I use D3.