Strontium: Uses, Benefits, Dosage & Safety
Last updated: June 2026 · Reviewed by the FactoWiki Editorial Team for clarity and source accuracy
Quick summary
Strontium is a mineral marketed for bone density. A prescription form showed benefits but also serious risks; over-the-counter strontium citrate is much less studied.
What is Strontium?
Strontium is a mineral chemically similar to calcium that is incorporated into bone. A prescription form (strontium ranelate) was used for osteoporosis in some countries, while supplements use strontium citrate.
What Strontium is commonly used for
In supplements, Strontium is most often included for joint & bone health support. It is used as nutritional support, not as a treatment for any medical condition — the distinction matters, because the claims on a sales page are often stronger than the evidence allows.
How Strontium works
Strontium both increases bone formation and reduces bone breakdown, and because it is denser than calcium it can also inflate bone-density scan readings without necessarily reflecting true strength.
What the evidence says
Here's an honest snapshot of what published research suggests about Strontium — including where the evidence is limited.
- Prescription strontium ranelate reduced fracture risk in trials but was restricted due to heart and clotting risks. Over-the-counter strontium citrate is far less studied, and its benefit-versus-risk profile is unclear.
- Study quality and doses vary, and a result seen in research doesn't guarantee the same for any individual — use the sources below to check the current evidence on Strontium rather than relying on marketing claims.
Typical dosage used in studies
Osteoporosis studies used 680 mg/day of elemental strontium (as ranelate). Supplement doses vary; strontium competes with calcium for absorption, so timing them apart is often advised. This is general information from research, not a personal recommendation or a dosing instruction.
Side effects and safety
Strontium has been linked to cardiovascular and clotting risks at therapeutic doses, and it can interfere with calcium handling and bone-scan accuracy. People with heart or clotting risk should avoid it without medical advice. As with any supplement, it's sensible to introduce Strontium on its own, use a trusted brand, and stop if you notice any reaction.
Medication interactions and who should avoid Strontium
Medication & safety check
Minerals can interact with medication and with each other (for example competing for absorption), and some matter a great deal in kidney or heart conditions. If you take any regular medication, are pregnant or breastfeeding, or manage a health condition, confirm Strontium is appropriate for you before starting.
This is general information, not personal medical advice. If you take any medication, are pregnant or breastfeeding, or have a health condition, confirm it's safe to use Strontium with your doctor or pharmacist first.
Sources & further reading
For authoritative background and the current research base on Strontium, consult:
- PubMed — search the research on Strontium
- NIH Office of Dietary Supplements — fact sheets
- MedlinePlus (U.S. National Library of Medicine)
- MedlinePlus — drugs, herbs & supplements
Frequently asked questions
Does Strontium actually work?
Prescription strontium ranelate reduced fracture risk in trials but was restricted due to heart and clotting risks. Over-the-counter strontium citrate is far less studied, and its benefit-versus-risk profile is unclear. As with most supplements, results vary between people and the marketing is often stronger than the evidence — so it's worth checking the research before relying on it.
Is Strontium safe to take?
For most healthy adults at normal doses it's generally well tolerated, but there are real cautions. Strontium has been linked to cardiovascular and clotting risks at therapeutic doses, and it can interfere with calcium handling and bone-scan accuracy. People with heart or clotting risk should avoid it without medical advice. If you take medication, are pregnant or breastfeeding, or have a health condition, check with a doctor or pharmacist first.
What is Strontium used for?
In supplements, Strontium is mainly included for joint & bone health support — as nutritional support, not as a treatment for any medical condition.
Where you'll find Strontium
On FactoWiki, Strontium is the kind of ingredient you'll see discussed in these supplement categories. Each category guide breaks down what the evidence does and doesn't support.
Related ingredients to explore
Ingredients often studied or formulated alongside Strontium — useful for understanding the full picture of a formula.