I'm taking something from New Life called Alive! Bone Support. It has the trifrcta of algae-derivec calcium/vitaminD3/vitaminK2 and magnesium and some other plant-sourced stuff. I added Bio-Sil as some studies mentioned silica as critical for bone renewal and, if it's not, my hairdresser swears it's critical for skin, hair and nails. I'm adding collagen in an abundance of caution. If bones don't actually need it, they can lend it to hair, skin and nails too. LOL