Boron glycinate
What it is
Boron chelated to glycine for better tolerance than borax or boric acid. Boron at 3-10 mg/day has small but consistent effects on calcium/magnesium retention, free testosterone (modest rise), and inflammatory markers. It is a conditionally essential trace element with no formal RDA but intakes below 0.5 mg/day correlate with poorer bone and hormonal outcomes. Toxicity is not a concern at supplemental doses (UL is 20 mg/day for adults) but high-dose boric acid is reproductively toxic.
Dose
3–10 mg elemental boron daily
Time of day & tips
Take with meals; prefer glycinate over borax/boric acid; benefits are modest and cumulative over months; particularly useful in high-phytate diets and where magnesium status is marginal
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