Boron

Also known as boron citrate, sodium borate.

Last reviewed October 9, 2026 · Jump to references

What is Boron?

In plain words

Boron is a naturally occurring element found in foods such as fruit, nuts, and beans. The body absorbs it, and the kidneys remove most of it through urine. Researchers study whether it affects bone health, joint symptoms, and how the body handles minerals and hormones. Evidence for clear health benefits remains limited, and too much boron can be toxic.

Technical definition

Boron is a trace metalloid found in foods and mineral compounds; supplemental forms include boron citrate and sodium borate. Ingested boron is absorbed primarily as boric acid and excreted mainly in urine, with no established specific receptor or confirmed essential biochemical function in humans. Boron is marketed in U.S. dietary supplements, which are not FDA-approved to treat or prevent disease.

Educational information only. This page does not provide medical advice or determine whether a supplement is appropriate for you. Review supplements with a qualified healthcare professional, especially if you take medication, are pregnant, have surgery scheduled, or have a chronic medical condition.

Evidence by use

Each use is rated on its own. There is no single overall effectiveness score.