Thorne, Iron Bisglycinate, 25 mg, 60 Capsules
Each capsule contains 25 mg elemental iron as Ferrochel ferrous bisglycinate chelate and no vitamin C. The product is currently in stock on iHerb and appears in NSF's Certified for Sport product database.
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Our Verdict
This has the strongest certification evidence and a research-aligned 25 mg dose, but its much higher cost per mg keeps it just behind the iTested California Gold product. Its 10,000+ recent sales reinforce the selection without overriding the weighted criteria.
Score Breakdown
Pros & Cons
Pros
- •NSF Certified for Sport listing is product-specific
- •25 mg elemental iron matches the bisglycinate dose used in the cited randomized pregnancy trial
- •Single-active formula with four disclosed capsule excipients
Cons
- •No vitamin C appears on the Supplement Facts panel
- •$0.27 per serving is roughly three times the cost of the two value leaders
Specifications
| Iron Form | Ferrochel ferrous bisglycinate chelate |
| Elemental Iron | 25 mg |
| Vitamin C | None |
| Serving Size | 1 capsule |
| Servings Per Container | 60 |
| Other Active Ingredients | None |
| Other Ingredients | Hypromellose capsule, microcrystalline cellulose, leucine, silicon dioxide |
| Testing / Certification | NSF Certified for Sport |
Who Is This For?
Best For
- Competitive athletes who require a recognized sport certification
- Buyers prioritizing certification over bottle price
Not For
- Budget-first shoppers
- Buyers wanting vitamin C in the same capsule
Where to Buy
Appears In
Customer Reviews
Alternatives to Consider
California Gold Nutrition, Ferrochel Iron (Bisglycinate), 36 mg, 90 Capsules
California Gold Nutrition
The label provides 36 mg elemental iron as ferrous bisglycinate chelate in one vegan capsule, with no vitamin C. iHerb currently lists it in stock and links a product-specific iTested certificate.
Solgar, Gentle Iron, 25 mg, 180 Capsules
Solgar
The Supplement Facts panel lists 25 mg elemental iron as iron bisglycinate chelate per vegetable capsule, without vitamin C. iHerb currently shows the 180-count bottle in stock.
Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets
Doctor's Best
The label supplies 27 mg elemental iron as Ferrochel ferrous bisglycinate chelate in one tablet, with no vitamin C. iHerb currently lists the 120-tablet bottle in stock.
Thorne, Advanced Iron Complex, 60 Capsules
Thorne
One capsule provides 36 mg elemental iron as Ferrochel ferrous bisglycinate plus 15 mg vitamin C, P-5-P vitamin B6, L-5-MTHF folate and methylcobalamin. iHerb currently lists it in stock, but the product page does not show NSF certification or a public product-specific certificate.