Supplement Label Index

Boron Glycinate vs. Sodium Borate

Among 2,843 on-market boron products with an identifiable primary form, 21.1% use Boron Glycinate (601 products) and 13% use Sodium Borate (371).

Boron GlycinateSodium Borate
Quality tierUnratedUnrated
Boron by weight—11.3%
Share of market21.1%13%
On-market products601371
Median declared dose1.5 elemental mg
middle half: 1–3
1 elemental mg
middle half: 0.15–2
Most common brandsPure Encapsulations, Life Extension, ProCaps LaboratoriesGNC Mega Men, Nature's Way, 21st Century

Doses are declared per serving in elemental mg. “By weight” is the share of the ingredient that is the nutrient itself (e.g. elemental magnesium in a magnesium salt).

Why Boron Glycinate is unrated

No head-to-head human bioavailability or efficacy comparison of this form was located in PubMed searches.

Why Sodium Borate is unrated

No head-to-head human bioavailability or efficacy comparison of this form was located in PubMed searches.

Tiers summarize published comparative bioavailability or outcome evidence for each form (see methodology). This page describes the market; it is not a recommendation to take either form. Talk to a clinician about what's right for you.

Other boron comparisons