In Australia and some countries in Europe, a form of strontium called strontium ranelate (Osseor, Protelos) is available as a prescription medication to treat and prevent osteoporosis and bone fractures. But the FDA hasn’t approved it for sale in the U.S., and it’s different from the forms of strontium that come in supplements that are available in the U.S..
The drug makes your bones stronger and lowers your chances of getting fractures. Doctors aren’t sure exactly how it works, but it seems to help the body make more bone and keep the bone you have from breaking down.