Pure Encapsulations
Boron (Glycinate) 2 mgEDE Score
86/100
Verdict
Buy
CPED
$0.70 / effective day/day
Form
capsule
Boron comparison
Best Boron Supplements Compared (2026): EDE Scored Reviews
Boron is an under-supplemented trace mineral with strong evidence for free testosterone elevation, estrogen modulation, and joint health. Clinical effective dose is 6-10 mg/day; the NIH Upper Limit is 20 mg/day. Naghii 2011 and follow-up studies show 10 mg/day boron raises free testosterone 11-29 percent over 7 days in healthy men by reducing SHBG (sex-hormone binding globulin).
Form matters less for boron than for other minerals; boron citrate, glycinate, and aspartate all absorb well. The 2 products in our catalog cover the value-tier and Tier 1 practitioner-grade options.
Editor's Pick
Pure Encapsulations
Boron (Glycinate) 2 mg
EDE Score
86/100Verdict
Buy
CPED
$0.70 / effective day/day
Pure Encapsulations Boron Glycinate scores 86/100. Practitioner-grade BUY: 2 mg boron glycinate per cap, clinical 6 mg/day at 3 caps, $0.70 CPED, Tier 1 brand.
Best Value
Now Foods
Boron 3 mg (Bororganic Glycine)Buy$0.06 / effective day/day
Approximately $235/year cheaper than the Top Pick at clinical full dose.
Read full review →Full comparison
Sorted by EDE Score (highest first). Tap a product name to read the full review.
Now Foods
Boron 3 mg (Bororganic Glycine)EDE Score
83/100
Verdict
Buy
CPED
$0.06 / effective day/day
Best value
Form
capsule
| Product | Verdict | EDE | Form / Dose | CPED | Cert |
|---|---|---|---|---|---|
| Buy | 86/100 | capsule1 capsule | $0.70 / effective day/day | Standard |
| Buy | 83/100 | capsule1 capsule | $0.06 / effective day/day Best value | Standard |
Frequently asked questions
- How does boron affect testosterone?
- Boron reduces SHBG, the protein that binds and inactivates testosterone. Lower SHBG means more free (bioactive) testosterone available even without changing total testosterone. Naghii 2011 showed 10 mg/day for 7 days raised free testosterone 28.3 percent and decreased SHBG 9 percent in healthy men.
- How much boron is safe?
- Up to 20 mg/day per the NIH Tolerable Upper Limit. Most products dose 3-10 mg per capsule. Long-term supplementation at clinical doses (3-10 mg) is well-tolerated. Avoid doses above 20 mg/day without specific medical indication.
- Should I take boron daily?
- Yes for sustained free testosterone effects; the SHBG-lowering effect requires consistent supplementation. Some users protocol-cycle (5 days on, 2 off) but evidence does not show this is necessary. Daily 6-10 mg is the standard regimen.
- Boron form: glycinate vs citrate vs aspartate?
- Functionally similar at clinical doses; absorption is high (>85 percent) across all common forms. Choose by brand availability and price. The patented FruiteX-B (calcium fructoborate) form has additional joint-health evidence but commands a premium.