Strontium

Ultra-trace alkaline earth metal with significant bone health benefits, naturally found in soil, water, and food sources

Scientific nameStrontium (Sr) FormulaSr Molecular weight87.62 g/mol CAS7440-24-6

25 absorption score

6 safety / 10

60 USD per month

6 documented interactions

Check it against something

Evidence level B

Strontium with:

86 out of 100

Works better together Compatible. Timing differs, so follow each supplement's own window.

Check it against your whole stack →

What it does

mechanism and evidence for each claim

Bone density and osteoporosis prevention

Significantly improves bone density and reduces fracture risk

Stimulates osteoblast activity while reducing osteoclast function Evidence A-grade 6-24 months for bone density improvements

Fracture healing and bone repair

Accelerates fracture healing and enhances bone repair processes

Promotes new bone formation and mineralization Evidence B-grade 3-12 months for healing benefits

Joint health and cartilage support

May support joint health and cartilage integrity

Influences cartilage metabolism and joint tissue health Evidence C-grade 6-18 months for joint benefits

Teeth and dental health support

Supports dental health and tooth mineralization

Incorporates into tooth structure and supports enamel strength Evidence B-grade 3-12 months for dental benefits

Age-related bone loss prevention

Helps prevent age-related bone loss and maintain skeletal health

Maintains bone remodeling balance and mineral content Evidence A-grade 12-36 months for long-term benefits

Others take these for the same thing

Same goal, different mechanism — check any of them against this one

Calcium Bone health & muscle function 1,000-1,200 mg A 30% Turmeric Anti-inflammatory & antioxidant 300-1000mg A 3% Vitamin D3 Bone health & immune support 1000-2000 IU A 85% Collagen Peptides Skin health & joint support 5-15g B 85% Calcium Carbonate Affordable bone health & antacid 1000-1200 mg A 25% Phosphorus Bone health & energy metabolism 700-1250mg A 80%

Every pair we checked

12 combinations scored by the engine

Strontium + Calcium Carbonate Calcium may interfere with strontium absorption Needs attention 58

Strontium + Caffeine No documented interaction either way No known interaction 70

Strontium + Creatine Monohydrate No documented interaction either way No known interaction 70

Strontium + Whey Protein No documented interaction either way No known interaction 70

Strontium + Lactase No documented interaction either way No known interaction 70

Strontium + Bovine Collagen No documented interaction either way No known interaction 70

Strontium + DHA No documented interaction either way No known interaction 70

Strontium + Turmeric No documented interaction either way No known interaction 70

Strontium + Fish Oil (EPA/DHA) No documented interaction either way No known interaction 70

Strontium + Magnesium Oxide Enhanced bone health and mineral metabolism Works better together 78

Strontium + Vitamin D3 Enhanced bone mineralization and strontium utilization Works better together 86

Strontium + Vitamin C (Ascorbic Acid) Enhanced bone mineralization and strontium utilization Works better together 86

Dosage

Between meals away from calcium

Daily340-680 mg

Bone health support340-680 mg daily

Osteoporosis prevention340-680 mg daily

Fracture healing340-680 mg daily

Maintenance dose170-340 mg daily

Before you take it

VeganYes

When to expect it

First Effects3-6 months for initial bone density changes

Peak Benefits12-24 months for maximum bone health benefits

Deficiency DevelopmentNot established as essential nutrient

Toxicity OnsetPotential risks with high doses over extended periods

How to measure it

$200-400 for bone density scan

MarkerBone density scans (DEXA), bone turnover markers

OptimalImproved bone density scores and reduced fracture risk

Deficient belowNot applicable - not essential nutrient

FrequencyMonitor bone density every 1-2 years during supplementation

What people actually reported to the FDA

CAERS, 6 reports naming it as the suspect

Most reported effects

Hospitalisation 2

Cerebrovascular accident 1

Rash 1

Cough 1

Hypersensitivity 1

Named as the suspect 6 reports of 13 that mention it at all

Serious outcome 70% hospitalisation, emergency room or worse

Other Serious or Important Medical Event3

Visited a Health Care Provider3

Hospitalization2

Reports are voluntary and unverified — they record what someone experienced while taking something, not what the compound caused. Counts skew towards products people take a lot of, and a serious outcome is more likely to be reported than a mild one, so these are not rates. How we filter them →

What actually reaches you

The label counts the carrier, your body does not

Absorption Low 25 of 100 · poorly absorbed relative to other forms

Delivered daily 127.5 mg

Cost per 100 mg delivered $1.57 comparative — uses the absorption score, not a measured percentage

Works better with

3 documented

Vitamin D

Enhanced bone mineralization and strontium utilization

Vitamin D improves mineral absorption and bone metabolism · level B

Vitamin K2

Improved bone quality and reduced fracture risk

K2 directs minerals to bones and improves bone matrix · level B

Magnesium

Enhanced bone health and mineral metabolism

Magnesium supports bone formation and mineral utilization · level B

What not to take with Strontium

3 documented

Calcium Supplements

Calcium may interfere with strontium absorption

Competition for absorption pathways and transporters · high significance

Dairy Products

High calcium foods may reduce strontium absorption

Dietary calcium competes with strontium for uptake · moderate significance

Phytic Acid

Phytates may bind strontium and reduce absorption

Formation of insoluble complexes in digestive tract · moderate significance

Medication interactions

Discuss these with a pharmacist before combining

bisphosphonates Minor

May have additive effects on bone density

What to do: Monitor bone health markers and fracture risk

calcium-channel-blockers Moderate

Potential interaction with cardiovascular medications

What to do: Monitor cardiovascular status and drug effectiveness

anticoagulants Moderate

Potential increased bleeding risk in some studies

What to do: Monitor clotting parameters and bleeding risk

Available forms

bioavailability compared

Strontium citrate 25

Strontium carbonate 20

Strontium citrate: Better absorption, Less GI upset, Organic form, Good tolerance

Strontium carbonate: Higher elemental strontium, Less expensive, Well-studied, Stable form

Food sources

before you supplement

Seafood (especially shellfish) Variable amounts depending on water source · 20

Root vegetables Small amounts - depends on soil content · 15

Whole grains and cereals Trace amounts - varies by growing conditions · 10

Strontium supplements 340-680 mg elemental strontium · 20-25

Too little

deficiency signs

Strontium deficiency not established (not essential nutrient):
However, inadequate intake may result in:
Suboptimal bone density and strength
Increased fracture risk and bone fragility
Slower bone healing and repair processes
Reduced resistance to age-related bone loss
Compromised skeletal health and integrity

Too much

toxicity signs

Strontium excess symptoms (high doses):
Potential cardiovascular risks and blood clot formation
Interference with calcium absorption and metabolism
Gastrointestinal upset including nausea and diarrhea
Possible increased bone brittleness with very high doses
Unknown long-term effects from prolonged high-dose use

Who benefits most

postmenopausal-women

High risk for osteoporosis and bone loss

340-680 mg daily (strontium ranelate equivalent)

osteoporosis-risk-individuals

Proven benefits for bone density and fracture prevention

340-680 mg daily

elderly-bone-health

Age-related bone loss prevention and skeletal maintenance

340-680 mg daily

fracture-recovery-patients

Accelerated healing and bone repair processes

340-680 mg daily

athletes-bone-stress

Support for bones under mechanical stress

170-340 mg daily

Where to buy it

compare forms first

Look for Strontium at 340-680 mg per serving. The form that matters here is Strontium citrate.

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What else affects it

Beyond other supplements

Dairy products

High calcium foods may reduce strontium absorption

Dietary calcium competes with strontium for uptake

How it works

Stimulates osteoblast proliferation and bone formation
Inhibits osteoclast activity and bone resorption
Incorporates into bone mineral matrix similar to calcium
Activates calcium-sensing receptor promoting bone health
Enhances collagen synthesis and bone matrix formation
Influences bone remodeling balance toward formation

Key findings

what the evidence supports

Strong evidence for bone density improvement and fracture reduction
Effective for osteoporosis prevention and treatment
May have cardiovascular risks requiring careful monitoring
Should be taken separately from calcium for optimal absorption

Sources: NIH Examine.com · data reviewed 2026-08-02

Compiled by Denis, who maintains this database and holds no medical qualification — every figure here is sourced or derived, never asserted. How we calculate it →

Common questions

What are the benefits of Strontium?

Documented effects: Bone density and osteoporosis prevention; Fracture healing and bone repair; Joint health and cartilage support; Teeth and dental health support. Significantly improves bone density and reduces fracture risk

How much Strontium should you take per day?

The common daily range is 340-680 mg. By goal — bone health support: 340-680 mg daily; osteoporosis prevention: 340-680 mg daily; fracture healing: 340-680 mg daily; maintenance dose: 170-340 mg daily.

When is the best time to take Strontium?

Between meals away from calcium. First effects are typically reported within 3-6 months for initial bone density changes.

What are the side effects of Strontium?

At excessive doses: Strontium excess symptoms (high doses):, Potential cardiovascular risks and blood clot formation, Interference with calcium absorption and metabolism, Gastrointestinal upset including nausea and diarrhea, Possible increased bone brittleness with very high doses. Safety rating at normal doses is 6 out of 10.

What should you not take with Strontium?

Separate it from Calcium Supplements, Dairy Products, Phytic Acid by two to four hours. Calcium may interfere with strontium absorption

Does Strontium interact with medications?

Documented interactions with bisphosphonates, calcium-channel-blockers, anticoagulants. Discuss these with a pharmacist before combining.

How do you know if you need Strontium?

The marker is Bone density scans (DEXA), bone turnover markers, optimal range Improved bone density scores and reduced fracture risk. Common deficiency signs: Strontium deficiency not established (not essential nutrient):, However, inadequate intake may result in:, Suboptimal bone density and strength, Increased fracture risk and bone fragility.

Taken for

38 Joints & Bones

Vitamin D3 · Calcium Carbonate · Bovine Collagen