Thorne, Iron Bisglycinate, 25 mg, 60 Capsules
Each capsule supplies 25 mg of elemental iron as Ferrochel ferrous bisglycinate, with no vitamin C. The US iHerb listing was in stock at $16 for 60 servings, and the product appears in NSF's Certified for Sport database.
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Our Verdict
It ranks first because it combines the preferred bisglycinate form and a research-matched dose with the list's strongest independently verifiable product certification.
Score Breakdown
Pros & Cons
Pros
- •NSF Certified for Sport status is independently verifiable in NSF's product database.
- •The 25 mg elemental-iron dose matches a published randomized human trial of ferrous bisglycinate.
- •The label discloses one active ingredient and four excipients: hypromellose, microcrystalline cellulose, leucine and silicon dioxide.
Cons
- •Vitamin C is not included.
- •At approximately $0.0107 per milligram of elemental iron, it costs more than twice as much per milligram as Solgar.
Specifications
| Iron Form | Ferrochel ferrous bisglycinate chelate |
| Elemental Iron | 25 mg |
| Vitamin C | None |
| Delivery Form | Capsule |
| Serving Size | 1 capsule |
| Servings Per Container | 60 |
| Cost per mg Iron | $0.0107 |
| Testing/Certification | NSF Certified for Sport; gluten-free |
Who Is This For?
Best For
- Buyers prioritizing a named, independently verifiable certification
- Those wanting a research-matched 25 mg single-ingredient capsule
Not For
- Buyers who want vitamin C in the same serving
- Shoppers seeking the lowest cost per milligram of iron
Where to Buy
Appears In
Customer Reviews
Alternatives to Consider
MegaFood, Iron Blood Builder, 30 Tablets
MegaFood
One tablet supplies 26 mg of elemental iron as fermented iron bisglycinate, plus 15 mg vitamin C, 680 mcg DFE folate, 30 mcg vitamin B12 and 125 mg beetroot. The US iHerb listing was in stock at $14.99 for 30 servings.
Sports Research, Blood Balance, 90 Liquid Veggie Capsules
Sports Research
Each liquid veggie capsule supplies 36 mg of elemental iron as Ferrochel ferrous bisglycinate and 15 mg vitamin C. The fully disclosed formula also contains vitamin B6, methylfolate and methylcobalamin; the US iHerb listing was in stock at $29.97 for 90 servings.
Solgar, Gentle Iron, 25 mg, 90 Capsules
Solgar
One vegetable capsule supplies 25 mg of elemental iron as iron bisglycinate chelate, without vitamin C or additional active nutrients. The US iHerb listing was in stock at $9.65 for 90 servings.
Natural Factors, Easy Iron, 60 Chewable Tablets
Natural Factors
Each chewable tablet supplies 20 mg of elemental iron as SunActive micronized ferric pyrophosphate plus 8 mg stevia leaf powder. The US iHerb listing was in stock at $13.27 for 60 servings and displays ISURA non-GMO documentation and mass-spectrometry testing statements.