I take one Sports Nutrition Research Vitamin K2 MK7 each day that I buy on Amazon, and 6000 IUs of Vitamin D3 that I buy at Costco plus a Multivitamin because my vitamin D levels run low; I am very sun-sensitive and I need to stay out of the sun. My vitamin D levels are stable at 60 taking these two vitamins, and so is my osteopenia. I see a physical therapist for strength training exercises and get a bone density study every two years.