Strontium
Best-in-class: Strontium Citrate
A bone supplement with a genuinely misleading measurement problem that almost nobody explains.
How Strontium actually works
Strontium sits directly below calcium in the periodic table and substitutes for it in the hydroxyapatite crystal of bone. Beyond acting as a mineral stand-in it appears to have a genuine dual signalling effect — stimulating osteoblast activity while inhibiting osteoclast resorption, possibly through the calcium-sensing receptor. That combination is unusual; most bone agents do one or the other.
Strontium quick facts
| Suggested dose | Not recommended without medical guidance. |
| How often | Only under medical guidance - not a self-directed supplement |
| Who it's for | Discuss with a doctor; there are better-evidenced options. |
✅ Clinically validated
- Strontium **ranelate** (a prescription drug, not this) showed fracture reduction in trials, but was restricted in Europe over cardiovascular and clotting risk. Strontium **citrate**, the supplement form, has no equivalent fracture data.
📊 Correlative data
- Strontium ranelate was prescribed in Europe for osteoporosis and had real fracture-reduction data — **then post-marketing surveillance found cardiovascular and severe skin reaction signals, and its use was heavily restricted**. The supplement salts are different compounds without that outcome data.
🧪 Theoretical / extrapolated benefits
- Strontium sits directly below calcium in the periodic table and substitutes for it in bone.
These tiers tell you how much human evidence exists — not how well something works. This is the research space, and most of what’s in here is new rather than disproven. Something sitting at “theoretical” usually means nobody has funded the trial, not that the trial was run and failed.
The trap runs the other way too: something can be clinically validated and still do very little for you specifically. A statistically significant result in a study population is not a promise about your body.
- ✅ Clinically validated — human randomised trials or meta-analyses support it. The strongest footing available.
- 📊 Correlative — observational or epidemiological data. Suggestive, and genuinely useful for direction, but it cannot establish cause.
- 🧪 Theoretical / mechanistic — the mechanism is understood and often demonstrated in cells or animals, and the human trial doesn’t exist yet. Unproven is not the same as ineffective. Plenty of what’s standard practice today sat here five years ago.
✗ is a safety flag, not a grade. Where you see it, the concern is harm — not a disappointing trial. A compound tested for one purpose and found not to help there can still be worth studying somewhere else, so a negative result never gets rendered as a cross. It sits alongside the tier, because something can be both well-studied and genuinely risky.
My job is to tell you which one you’re looking at, and let you make the call. Grading something low isn’t me dismissing it — it’s me refusing to oversell it. This is the research space, and being able to reason forward from a mechanism matters as much as waiting for the trial.
The measurement artifact is the thing to understand before you are impressed by a result. Strontium is denser than calcium, so a DEXA scan reads bone that has incorporated it as denser than it truly is — reported density gains substantially overstate the real structural change. Take away from calcium, since they compete for the same absorption pathway. The pharmaceutical form used in Europe carried a cardiovascular signal that the citrate sold as a supplement has not been tested for either way.
Strontium — safety & side effects
- GI upset, and headache in some people.
- Strontium ranelate was withdrawn in Europe over cardiovascular and clotting risk. Strontium citrate — the supplement form — has not been studied to the same standard, so its safety is assumed rather than demonstrated.
- It falsely inflates DXA bone density readings because it is heavier than calcium. A scan taken while supplementing overstates your bone density, which is the opposite of useful.
- Competes directly with calcium; separate them, and avoid with kidney disease.
Not medical advice. If you take prescription medication or have a diagnosed condition, check this against it with a pharmacist or doctor — pharmacists are underused and free.
Where to get Strontium
Find Strontium on iHerb →Get the complete breakdown for Strontium — inside the Academy alongside the full interactive Vault.
Unlock in the Academy — $10/mo →- When to take it, and what to take it with
- Which form actually absorbs
- Who it's worth it for
- Best-in-class brand pick
- Coach Cam's stacks and notes
Get the complete breakdown for Strontium — inside the Academy alongside the full interactive Vault.
Unlock in the Academy — $10/mo →Bloodwork to run alongside Strontium
Run these before you start, and again after 8–12 weeks. A baseline you didn’t take is one you can never go back for.
| Marker | What it’s watching for |
|---|---|
| Zinc, Plasma | Deficiency is common; excess quietly depletes copper |
| Copper, Serum | The mineral zinc supplementation drives down |
| Magnesium, RBC | Serum magnesium looks normal in real deficiency |
| Ferritin | Never supplement iron on a guess — see haemochromatosis below |
The Full Micronutrient Screen panel covers these in one order — 11 markers, $363.60 with the discount applied.
Check results you already have → · All 102 markers A–Z
Strontium — frequently asked questions
What is Strontium?
A bone supplement with a genuinely misleading measurement problem that almost nobody explains.
What is the suggested dose of Strontium?
Not recommended without medical guidance. This is a general reference for education only — statements have not been evaluated by the FDA and this is not medical advice.
Where can I find Strontium dosing and the full breakdown?
The suggested dose and the full evidence — clinical, correlative and theoretical — are on this page. What's inside the Academy is when to take it, which form actually absorbs, the brand worth buying and Coach Cam's stacks.
Where can I buy Strontium?
Coach Cam sources Strontium from vetted, top-rated brands on iHerb — use the buy link on this page.
Build your foundation with Coach Cam
The full Supplement Vault — 350 products across 14 categories with clinical, correlative & theoretical evidence, plus my Thorne partner links — lives inside the Academy alongside 237 peptides.
Join the Academy — $10/mo →What Strontium is used for
Strontium appears under 3 goals in the Vault’s goal router, grouped by the mechanism it works through rather than by how much trial evidence exists. Each link opens that pathway in full, with the alternatives beside it and the bloodwork that tests it.