Boron
Full ranking Dose tool Products (1,535)
Key facts
Sources: https://ods.od.nih.gov/factsheets/Boron-HealthProfessional/ · adult UL 20 mg
Daily dose across products (mg/day)
Label data from official national databases and brand websites, as declared; not lab-verified.
Common forms
| Form | Products | Median | P5–P95 | Elemental fraction |
|---|---|---|---|---|
| Boron citrate | 463 | 1 mg | 0.05 – 4 | — |
| Boron glycinate | 342 | 1 mg | 0.1 – 3 | — |
| Boron fructoborate | 126 | 112 mg | 0.7 – 120 | — |
Common questions
Is there an upper limit for Boron?
The adult Tolerable Upper Intake Level (UL) is 20 mg per day. Going above it long term raises the risk of adverse effects. See the linked source. [source]
How much Boron do products usually contain per day?
As of 2026-11-01, 1,535 products list a comparable daily dose (1,653 dose records; one product can have several). The median is 1.5 mg per day, and 90% of records fall between 0.075 and 112 mg. Figures come from labels and are not lab-tested. [source]
What are the side effects of Boron?
Boron in food and drinks is not harmful. Harm comes from accidentally swallowing cleaning products or pesticides with borax or boric acid. Symptoms of too much include nausea, vomiting, diarrhea, rashes, headaches and convulsions; very high amounts can be fatal. (Source: NIH ODS) [source]
What happens if you take too much Boron?
The adult UL is 20 mg a day from all sources. US adults get about 1 mg a day from food. No recommended amount has been set, and boron is not considered an essential nutrient. (Source: NIH ODS) [source]
Is Boron safe during pregnancy and breastfeeding?
The UL in pregnancy and breastfeeding is 17 mg (teens) and 20 mg (women). No recommended amount has been set. (Source: NIH ODS) [source]
Does Boron interact with medications or other supplements?
Boron is not known to interact with any medicines or supplements. (Source: NIH ODS) [source]
Top ranked
| Rank | Brand | Product | Per day | Score |
|---|---|---|---|---|
| 1 | Swanson | Boron 6 mg | 6 mg | 100.0 |
| 1 | Solaray | Tetra-Boron 3 mg | 3 mg | 100.0 |
| 1 | Swanson | Triple Boron Complex 3 mg | 3 mg | 100.0 |
| 4 | The Vitamin Shoppe | Boron 3 mg | 3 mg | 97.8 |
| 4 | Vitamin World | Boron 3 mg | 3 mg | 97.8 |