Bor

Mineral Evidence: moderate

Overview

Boron is an ultratrace mineral not classified as nutritionally essential for humans — no RDA or AI is established. WHO suggests a safe intake range of 1–13 mg/day. Research suggests possible roles in bone formation, brain function, calcium/magnesium metabolism, and steroid hormone activity (including vitamin D). Evidence is mainly observational. Typical supplement doses: 0.15–6 mg/day elemental boron. Tolerable upper limit: 20 mg/day for adults.

Dosage

2 mg · Any time · Can take on empty stomach

Key Interactions

3 verified interactions found

Calcium Carbonate Info

Boron reduces urinary calcium excretion and supports calcium integration into bone matrix. Together they support bone mineral density maintenance.

Combine for bone health.

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Magnesium Glycinat (Bisglycinate) Info

Boron reduces urinary magnesium excretion, effectively increasing magnesium retention. Both support bone mineral density.

Combine for bone health. No timing restrictions.

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Vitamin D3 (Cholecalciferol) Info

Boron extends the half-life of Vitamin D3 by inhibiting 24-hydroxylase (CYP24A1) that catabolizes 25(OH)D. Boron supplementation can increase serum 25(OH)D levels.

Combine for enhanced Vitamin D status. Boron 3-6mg daily.

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Scientific Sources

Frequently Asked Questions

What is Bor used for?

Boron is an ultratrace mineral not classified as nutritionally essential for humans — no RDA or AI is established.

What is the recommended dosage for Bor?

2 mg. Any time. Can take on empty stomach.

Does Bor interact with other supplements?

Bor has 3 verified interactions. Top: Calcium Carbonate, Magnesium Glycinat (Bisglycinate).

When is the best time to take Bor?

Any time. Can take on empty stomach.

Is Bor safe to combine with other supplements?

Always check interactions before combining supplements. Use VitalStack to verify your full stack for free.

Check how Bor fits your full stack

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Not medical advice. VitalStack is not a medical device. For personalized health recommendations, consult a healthcare provider.