The keys to building and maintaining healthy bones are to ensure adequate weight bearing exercise, strength training, plus meeting your bone nutrient needs, especially for calcium, magnesium, vitamin D, and vitamin K. For details please read, “Essential Nutrients for Bone Health: Calcium, Magnesium, Vitamin D, and Vitamin K”
My favorite product that combines a multivitamin, with fish oil, plus calcium, magnesium, vitamin D, and vitamin K is Twice Daily 
Essential Packet with Bone Support, a supplement pack designed to be taken twice daily.
If you already have a multivitamin and are just trying to add this combination of calcium, magnesium, Vitamin D, and Vitamin K in a single tablet, then I’d recommend OsteoForce. 
Follow-up Coaching