Skip to main content
SupplementScience

Types of Boron: Forms & Bioavailability

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Forms Comparison

FormBioavailabilityBest For
Calcium FructoborateHighBest-studied form for inflammation and joint comfort
Boron CitrateModerate-HighGeneral supplementation — well-absorbed and commonly available
Boron GlycinateModerate-HighChelated form with good absorption
Borax (Sodium Borate)ModerateIndustrial and research use — not recommended as a supplement due to safety concerns

Calcium Fructoborate

Bioavailability: High. Best for: Best-studied form for inflammation and joint comfort.

Boron Citrate

Bioavailability: Moderate-High. Best for: General supplementation — well-absorbed and commonly available.

Boron Glycinate

Bioavailability: Moderate-High. Best for: Chelated form with good absorption.

Borax (Sodium Borate)

Bioavailability: Moderate. Best for: Industrial and research use — not recommended as a supplement due to safety concerns.

References

  1. (). Comparative effects of daily and weekly boron supplementation on plasma steroid hormones and proinflammatory cytokines. Journal of Trace Elements in Medicine and Biology. DOI
  2. (). Short-term efficacy of calcium fructoborate on subjects with knee discomfort: a comparative, double-blind, placebo-controlled clinical study. Clinical Interventions in Aging. DOI
  3. (). Effect of dietary boron on mineral, estrogen, and testosterone metabolism in postmenopausal women. FASEB Journal. DOI