You definitely have to have at least 1200 mg a day while you’re on evenity, spread out as you can only digest 500mg at a time. It also takes protein and collagen to digest calcium as well as Vitamin D and others. I finished my evenity with a bone gain of 11% in my spine and 1% in my hip. I’m starting Prolia but I’m going to stay on my new calcium nutritional regimen the rest of my life as it does seem to mitigate pain and help me sleep better plus the bone building. I hope everything finds what works for them