Sure, you can take two things that don't work at the same time. Strontium is another thing that makes your bones look bigger and stronger - but it is an illusion. They discovered this after nuclear bombs went off. They found that people in the area appeared to have stronger bones, But it doesn't last. There are several kinds of strontium and some of it is banned in Europe for being unsafe. I took strontium for about six months - then I threw it out. You could have had mine. BTW: I started with a DEXA scan that showed -5.7 and after taking strontium, I was still at -5.7. I''ll be getting another DEXA scan as soon as this pandemic is over with and I will post my new scan score when that happens. I'm using calcium, magnesium, D3, K2, boron and collagen peptides. I am also using an extremely low dose of estrogen. I was fracturing two years ago - but I am not fracturing now. Knock on wood. I am a very active gardener.