Mineral
Boric Acid
Also known as: boron, boric compound, orthoboric acid
Boric acid is a boron-containing compound sometimes used in supplements for bone health and hormonal support, though clinical evidence in humans is limited. Most research on boron's effects comes from dietary studies rather than controlled trials of supplemental boric acid.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Boric Acid 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 Boric Acid should I take?
The typical range is 3-10 mg daily (as boron equivalent). Long-term safety data in humans is limited; short-term use (weeks) generally studied
When should I take Boric Acid?
With meals. Recommended to enhance absorption.
Which form of Boric Acid is best?
Capsule. Other forms in the catalog: Powder.
Is Boric Acid safe?
Commonly reported: Gastrointestinal upset, Nausea, Mild skin rash (rare).
Which Boric Acid 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 support
- Calcium and magnesium metabolism
- Hormonal balance
How it works
- May enhance calcium and magnesium absorption and retention
- Potential modulation of estrogen and testosterone metabolism
Dosage
- Typical range
- 3-10 mg daily (as boron equivalent)
- Timing
- With meals
- With food
- Recommended to enhance absorption
- Duration
- Long-term safety data in humans is limited; short-term use (weeks) generally studied
- Special populations
- Pregnancy/lactation: avoid or consult healthcare provider; kidney disease: use with caution due to boron accumulation risk
Forms
- Capsule· 70/100
- Powder· 70/100
Safety
Common side effects
- Gastrointestinal upset
- Nausea
- Mild skin rash (rare)
Contraindications
- Renal impairment (boron accumulates in kidneys)
- Pregnancy and lactation (insufficient safety data)
- Hypersensitivity to boron compounds
Products containing Boric Acid
Top-scoring supplements in our catalog that list Boric Acid on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Limited human RCT data specific to boric acid supplementation. Most evidence is observational or from animal studies examining boron's role in mineral metabolism. Dietary boron deficiency effects are documented, but therapeutic supplementation benefits lack robust clinical support.
Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.
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.