Strontium throws off the DEXA because it is heavier (denser) than calcium and replaces it in the bones. I have posted on this before. It is well known. Forums like Inspire also have folks posting about the improvements on strontium and the doc there informs people why it can affect DEXA.

That said, strontium ranelate, which was by prescription in Europe/UK, was used for osteoporosis when a patient could not tolerate anything else. It is no longer available or approved because of clot and cardiovascular risk.

Strontium citrate is sold in supplements in the US and is over the counter. As I wrote before, several companies have stopped selling it (Dr.'s Best is one) and the amounts in some supplements is negligible. The dose suggested for bones was 680mg.

If strontium does work, it works slowly so may not be appropriate for some of us anyway.

Noone seems to know if the citrate has the same risks as the ranelate.

I took strontium on my own 15 years ago, before it was taken off the market. Only because I could not tolerate any of the other meds (Tymlos did not exist yet). I would not take it now.