Boron Citrate vs. Calcium Fructoborate
Among 2,843 on-market boron products with an identifiable primary form, 30.6% use Boron Citrate (869 products) and 4.6% use Calcium Fructoborate (131).
| Boron Citrate | Calcium Fructoborate | |
|---|---|---|
| Quality tier | Unrated | Unrated |
| Boron by weight | — | 2.5% |
| Share of market | 30.6% | 4.6% |
| On-market products | 869 | 131 |
| Median declared dose | 1 elemental mg middle half: 0.5–3 | 5.4 elemental mg middle half: 3–6 |
| Most common brands | Douglas Laboratories, vitafusion, Pure Essence Ionic-Fizz | Vibrant Health, Purity Products, Schiff |
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 Citrate is unrated
No head-to-head human bioavailability or efficacy comparison of this form was located in PubMed searches.
Why Calcium Fructoborate is unrated
The only form here with form-specific clinical trials we located (110mg twice daily for 14 days for knee discomfort, n=60, industry-affiliated authors; a 2021 erratum exists); no comparison of boron absorption against other boron forms was located, so no tier is assigned.
Source: Pietrzkowski Z et al. 2014, Clin Interv Aging 9:895-9, PMID 24940052
Other boron comparisons
- Boron Citrate vs. Boron Amino Acid Chelate
- Boron Citrate vs. Boron Glycinate
- Boron Citrate vs. Sodium Borate
- Boron Amino Acid Chelate vs. Boron Glycinate
- Boron Amino Acid Chelate vs. Sodium Borate
- Boron Amino Acid Chelate vs. Calcium Fructoborate
- Boron Glycinate vs. Sodium Borate
- Boron Glycinate vs. Calcium Fructoborate
- Sodium Borate vs. Calcium Fructoborate