Vitamins & minerals
Boron
Names you may see: boron citrate glycinate calcium fructoborate
The quick take
Boron is a trace element found naturally in plant foods.
A closer look
What forms will I see on a label?
Labels may list boron citrate, boron glycinate or calcium fructoborate. Compare the amount of elemental boron.
Why people use it
It appears in bone and joint formulas and products marketed for hormone support.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
Research into bone, joint and hormone effects is preliminary. There is no established daily requirement, and boron is not a proven muscle-building or testosterone treatment.
What should I know before using it?
Excess intake can be toxic. Count boron from all supplements and follow the label. Household borax and boric-acid products are not substitutes for a dietary supplement.
Sources & further reading
Published boron study in bodybuilders ↗
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.