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Boron Supplement Upper Limit: What 20 mg Means for a Blend Line
The adult upper limit for boron is 20 mg a day, and there is no recommended daily amount. The Reviralis label lists boron (citrate) 15th in a 661 mg blend, at most 44.07 mg per serving of the whole compound, with no amount printed. Boron is a fraction of that compound, so the label alone cannot show where it falls.
Written by the Goreviralis label deskUpdated · 4 min read
What is the boron supplement upper limit?
Adults should stay under 20 mg of boron a day from all sources. The National Academies set that upper limit and did not set a recommended daily amount for boron (National Academies, trace-element DRIs).
An upper limit is a ceiling for safety planning, not a goal. No recommended amount exists because boron has not been shown to be an essential nutrient the way iron or zinc is. Food already supplies some: fruits, nuts and vegetables are typical sources.
Think of it like a speed limit on a road you do not need to drive. You only need to know the number if you choose to drive.
How much boron is in Reviralis?
The label does not say. "Boron (citrate)" is the 15th of 18 names in the 661 mg blend, so the whole compound weighs at most 44.07 mg per serving.
US rules list blend members from most to least by weight (21 CFR 101.36). The 15th name cannot exceed 661 divided by 15. But boron citrate is a compound, and boron is only part of its weight. The label does not give the boron share, so the 44.07 mg figure is not a boron figure.
| Item | Value |
|---|---|
| Adult upper limit for boron | 20 mg a day |
| Recommended daily amount | None set |
| Reviralis name | Boron (citrate), 15th of 18 |
| Printed amount | Not printed |
| Ceiling of whole compound per serving | At most 44.07 mg |
The honest summary: nothing on the label suggests the limit is reached, and nothing on the label proves it is not.
Do boron bone claims hold up?
The cited sources do not show a benefit that a buyer can rely on. The National Academies set only a limit, with no recommended amount, so no daily need has been set (National Academies, trace-element DRIs).
Claims about bones, joints or hormones often circulate with boron. This site does not repeat them as fact. If bone health is the goal, calcium and vitamin D intake, activity and a clinician's advice matter more than a trace mineral. The Reviralis label shows calcium at 20 mg and vitamin D at 2.5 mcg, both small next to daily needs.
Reviralis: from $49 a bottle60 capsules a bottle · 2, 3 or 6 bottles · free US shipping on 3 and 6 · 60-day money-back guarantee
See packsHow do you avoid doubling up on boron?
Count it across every product. Many multivitamins and bone formulas include boron, and amounts add.
- List every supplement you take, with its Supplement Facts panel.
- Look for boron in mg or mcg, and note whether it is a salt such as citrate.
- Add the boron numbers and compare the total with 20 mg.
- Take the list to a pharmacist.
"This blend lists boron citrate with no amount. With my other supplements, am I near the 20 mg limit?"
Who should ask before taking a blend that includes boron?
Anyone pregnant, nursing, under 18, on prescription medicine or living with a medical condition, which matches the label's own caution.
The label asks you to consult your healthcare provider first, and it names seizure history too. Keep taking prescribed medicine, including any antiviral. No source tested Reviralis, and none links boron to herpes.
More: all 40 names, the blend math and vanadyl sulfate.
FAQ01
Reviralis questions people ask
What is the upper limit for boron?
The National Academies set 20 mg a day for adults, from all sources. No recommended daily amount exists for boron.
Is boron citrate the same as boron?
No. Boron citrate is a compound, and boron is only part of its weight. A label that prints the compound weight does not give the boron weight.
How much boron is in Reviralis?
The amount is not printed. Boron (citrate) is 15th of 18 names in a 661 mg blend, so the compound weighs at most 44.07 mg per serving.
Which foods contain boron?
Plant foods such as fruits, nuts and vegetables are typical sources, so many people get some without a supplement.
Does boron help bones?
The cited sources give a limit but no proven need. Ask a clinician about calcium, vitamin D and bone health.
Who wrote this02
Written and reviewed by
Pages built from the label, the sales page and linked NIH, CDC, FDA, FTC, Mayo Clinic and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a U.S. stocking partner for Reviralis. It is not the manufacturer or the distributor named on the label. We earn money when you buy through our order links.
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