Mineral
Boron
Also known as: Borax (food-grade), Boron citrate, Boron glycinate, Calcium fructoborate
Trace mineral supporting bone health, cognitive function, and hormone metabolism. May support testosterone in deficient states.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Boron 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 should I take?
The typical range is 3-6 mg daily. Safe long-term
When should I take Boron?
Any. Optional.
Which form of Boron is best?
Boron citrate — Common. Other forms in the catalog: Boron glycinate, Capsule.
Is Boron safe?
Commonly reported: Well tolerated. Serious warnings: Don't exceed 20mg/day. Safe
Which Boron 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
- Hormone metabolism
- Cognitive function
- Testosterone support
- Inflammation
What systematic reviews concluded
Outcomes that systematic reviews of Boron reached a verdict on: 1 unclear. Each is quoted from a review and linked to it on PubMed. How these were read.
Not enough to say: athletic performance.
How it works
- Influences calcium/magnesium metabolism
- May affect testosterone/estrogen balance
- Supports bone mineral density
Dosage
- Typical range
- 3-6 mg daily
- Timing
- Any
- With food
- Optional
- Duration
- Safe long-term
- Special populations
- Postmenopausal women, athletes
Forms
- Boron citrate
- Boron glycinate
- Capsule
Safety
Common side effects
- Well tolerated
Contraindications
- Hormone-sensitive conditions (caution)
Products containing Boron
Top-scoring supplements in our catalog that list Boron on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Known interactions
Evidence notes
Supports bone and hormone health
Grade B: Some human trials support key claims; further confirmation needed.
Related in Mineral
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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.