Best Iron Bisglycinate Supplements (2026) — Ranked by Cost per Effective Dose
Top pick for Iron Bisglycinate: Solgar Gentle Iron (Iron Bisglycinate) 25 mg — 25mg per 1 capsule, $0.15/day. Our best-value pick.
All Iron Bisglycinate Supplements Compared
All 4 products sorted by cost per clinically-effective daily dose (lowest first). Dose, certification, and pricing verified against NIH DSLD and manufacturer data.
| Product | Brand | Dose / Serving | Cost / Day | Certification | Pick | Buy |
|---|---|---|---|---|---|---|
| NOW Foods Iron 36 mg Double Strength (Ferrochel) | NOW Foods | 36mg / 1 capsule | $0.14 | None | Budget Pick | Buy |
| Solgar Gentle Iron (Iron Bisglycinate) 25 mg | Solgar | 25mg / 1 capsule | $0.15 | None | Best Value | Buy |
| Thorne Iron Bisglycinate 25 mg | Thorne | 25mg / 1 capsule | $0.27 | NSF Certified for Sport | Quality Pick | Buy |
| MegaFood Blood Builder | MegaFood | 26mg / 1 tablet | $0.32 | NSF Certified | Buy |
Our Picks
Best Value: Solgar Gentle Iron (Iron Bisglycinate) 25 mg
25mg per 1 capsule. $0.15/day. 90 servings per container at $13.49.
Quality Pick: Thorne Iron Bisglycinate 25 mg
25mg per 1 capsule. NSF Certified for Sport. $0.27/day. 60 servings per container at $16.00.
Budget Pick: NOW Foods Iron 36 mg Double Strength (Ferrochel)
36mg per 1 capsule. $0.14/day. 90 servings per container at $12.99.
How We Rank Iron Bisglycinate Supplements
Every product is evaluated on three criteria:
- Cost per clinically-effective daily dose. Not cost per pill or cost per bottle. We calculate what it actually costs per day to take the dose used in clinical trials.
- Third-party certification. USP Verified, NSF Certified for Sport, and ConsumerLab Approved indicate independent testing for purity, potency, and contaminants.
- Bioavailable form. We prioritize products using the specific chemical form shown to be most effective in published research.
Rankings are not influenced by affiliate commissions. We earn the same commission regardless of which product you choose. Read our full methodology.
Personalize Your Iron Bisglycinate Choice
Not sure which iron bisglycinate supplement is right for you? Use our free tools:
- DNA Supplement Analyzer — upload 23andMe or AncestryDNA data to check for genetic variants affecting iron bisglycinate metabolism. Runs entirely in your browser.
- Lab Results Interpreter — enter your blood test values to get personalized dosing recommendations.
- Supplement Stack Builder — build a complete protocol based on your age, sex, medications, and goals.
- Supplement Audit — already taking iron bisglycinate? Check if you have the right form and dose.