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Boron and Calcium can be taken together. Any benefit from combining them rests on limited evidence. Boron (3–6 mg/day) can be taken with calcium. A bone-density benefit from adding it has not been shown.
In a metabolic-unit study of 12 postmenopausal women, 3 mg boron a day reduced urinary calcium and magnesium loss. No trial cited here measured bone density.
Boron reduces urinary excretion of calcium and magnesium, increases serum estradiol levels (which promote osteocalcin expression), and modulates vitamin D metabolism. Boron also activates osteoblast-related gene expression (RUNX2, BMP-2).
What to do: Boron (3–6 mg/day) can be taken with calcium. A bone-density benefit from adding it has not been shown.
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.