Mineral
Boron (as Boron Citrate)
Also known as: boron, boron citrate, elemental boron, B (mineral)
An essential trace mineral involved in bone metabolism, hormone regulation, and cognitive function. Boron citrate is a bioavailable form of elemental boron commonly used in supplements.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Boron (as Boron Citrate) product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Nutricost Boron Capsules | 90 A | $0.07 |
| 2 | Transparent Labs BULK Pre-Workout | 90 A | $1.67 |
| 3 | Complement ForHer Hormone Balance and Longevity Multivitamin for Women | 89 A | $0.67 |
| 4 | Nootropics Depot Boron Glycinate Capsules | 89 A | $0.17 |
| 5 | Life Extension Boron | 89 A | $0.06 |
| 6 | Thorne Advanced Nutrients | 88 A | $2.40 |
| 7 | Thorne Basic Nutrients 2/Day | 88 A | $0.60 |
| 8 | Thorne Basic Prenatal | 88 A | $1.23 |
| 9 | Thorne Men's Multi 50+ | 88 A | $1.87 |
| 10 | Thorne Advanced Bone Support | 87 A | $0.48 |
| 11 | Garden of Life Vitamin Code 50 & Wiser Women | 87 A | $1.01 |
| 12 | Thorne MediClear-SGS™ - Vanilla | 86 A- | $2.10 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much Boron (as Boron Citrate) should I take?
The typical range is 1–3 mg daily (elemental boron). Safe for ongoing daily use; benefits accumulate over weeks to months
When should I take Boron (as Boron Citrate)?
With meals for better absorption. Recommended.
Which form of Boron (as Boron Citrate) is best?
Boron citrate. Other forms in the catalog: Boron aspartate, Boron glycinate.
Is Boron (as Boron Citrate) safe?
Commonly reported: Generally well-tolerated at supplemental doses; GI upset rare.
Which Boron (as Boron Citrate) supplement scores highest?
Nutricost Boron Capsules, at 90/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Bone health and mineral density
- Hormone balance (particularly estrogen)
- Joint and connective tissue support
- Cognitive function
How it works
- Regulates calcium, magnesium, and phosphorus metabolism critical for bone mineralization
- Influences estrogen and testosterone metabolism
- Modulates inflammatory signaling and antioxidant enzymes
Dosage
- Typical range
- 1–3 mg daily (elemental boron)
- Timing
- With meals for better absorption
- With food
- Recommended
- Duration
- Safe for ongoing daily use; benefits accumulate over weeks to months
- Special populations
- Particularly relevant for post-menopausal women; upper limit approximately 20 mg/day
Forms
- Boron citrate· 70/100
- Boron aspartate· 70/100
- Boron glycinate· 70/100
Safety
Common side effects
- Generally well-tolerated at supplemental doses; GI upset rare
Contraindications
- Pregnancy and nursing: avoid high-dose boron supplementation; adequate dietary intake is safe
- Individuals with kidney disease should consult healthcare provider
Products containing Boron (as Boron Citrate)
Top-scoring supplements in our catalog that list Boron (as Boron Citrate) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Boron has preliminary evidence for bone health and hormone support, particularly in post-menopausal women, but research is limited and inconsistent. Few high-quality RCTs; most evidence is observational or from small studies. Grade reflects moderate but incomplete evidence.
Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.