Page "Osteopenia" Paragraph 16

Strontium ranelate has been approved in 27 European countries, having been found to build bone both by slowing the work of osteoclasts and stimulating osteoblasts.

Phase 3 clinical trials are nearing completion in the US.

Other ( natural ) forms of available strontium include strontium lactate, strontium gluconate, strontium carbonate, and strontium citrate.