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Mineral

Boric Acid

Also known as: boron, boric compound, orthoboric acid

C
Evidence

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.

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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.

Nutricost
Boron Capsules
90
Transparent Labs
BULK Pre-Workout
90
Complement
ForHer Hormone Balance and Longevity Multivitamin for Women
89
Nootropics Depot
Boron Glycinate Capsules
89
See all products →

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.

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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.