Minerals

Strontium

Also called: strontium citrate, strontium ranelate

A mineral similar to calcium, taken up by bone.

Why people take it
Osteoporosis.
What the evidence says
Prescription strontium ranelate reduced fractures but raised heart and clot risks. Supplement forms are not tested.
How it is usually taken
Supplements usually contain strontium citrate 340 to 680 mg; not the same as the prescription medicine strontium ranelate.
Be careful
Makes bone density scans look better than they are. Avoid with heart or clot problems.
Medicines it can interact with
Calcium taken at the same time lowers absorption. Falsely raises bone density scan results.

Other minerals

Common questions

What is Strontium?

A mineral similar to calcium, taken up by bone.

Why do people take Strontium?

Osteoporosis.

Does Strontium work?

Prescription strontium ranelate reduced fractures but raised heart and clot risks. Supplement forms are not tested.

How much Strontium do people take?

Supplements usually contain strontium citrate 340 to 680 mg; not the same as the prescription medicine strontium ranelate.

Is Strontium safe?

Makes bone density scans look better than they are. Avoid with heart or clot problems.

Does Strontium interact with medicines?

Calcium taken at the same time lowers absorption. Falsely raises bone density scan results.

Sources and further reading

Last reviewed 31 October 2026. Written by Satya Babu.

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For information only, not medical advice. Supplements are not medicines: they are not tested and approved like drugs before they are sold, and they can interact with medicines. Talk to your doctor or pharmacist before you start one, especially if you are pregnant or breastfeeding, take regular medicines, or have kidney, liver or heart disease.