SuppRankedTop 10 iron brands on Amazon (estimated revenue)
Ranked by estimated monthly revenue from Amazon's Iron Best Sellers top 100. Updated October 15, 2026.
THORNE is the top-selling iron brand on Amazon by estimated revenue, at about $1.2M/mo from 2 products in the Iron Best Sellers top 100. That is about 61% more than #2 MegaFood (~$759K/mo). The list is fragmented: the top 3 brands take about 27% of its estimated sales and the top 10 about 56%, spread across 61 brands in total. The median list price in this top 100 is $17.92, and 16% of the products are gummies. All figures are modeled estimates, not Amazon data.
| # | Brand | Est. revenue/mo |
|---|---|---|
| 1 | THORNE13% share · best #2 | $1.2M |
| 2 | MegaFood8% share · best #4 | $759K |
| 3 | Floradix6% share · best #7 | $620K |
| 4 | MaryRuth's6% share · best #12 | $550K |
| 5 | NovaFerrum6% share · best #10 | $527K |
| 6 | Nature Made5% share · best #1 | $495K |
| 7 | Vitron-C4% share · best #3 | $365K |
| 8 | SiderAL3% share · best #56 | $299K |
| 9 | Pure Encapsulations3% share · best #11 | $271K |
| 10 | Slow Fe3% share · best #9 | $259K |
The top 10, brand by brand
1. THORNE
~$1.2M/mo est. revenue (13% of this list) and ~65.7K units/mo from 2 products; best position #2. Its highest-ranked product here is THORNE Iron Bisglycinate, 25 mg Iron Supplement, 60 Capsules | Enhanced… at #2. Overall it ranks #3 of 867 brands.
2. MegaFood
~$759K/mo est. revenue (8% of this list) and ~32K units/mo from 3 products; best position #4. Its highest-ranked product here is MegaFood Blood Builder Iron Supplement, Energy Support, Vegan, 90 Tablets… at #4. Overall it ranks #49 of 867 brands.
3. Floradix
~$620K/mo est. revenue (6% of this list) and ~22.1K units/mo from 3 products; best position #7. Its highest-ranked product here is Floradix Iron & Herbs, Herbal Supplement for Men and Women, 8.5 fl oz | Liquid… at #7. Overall it ranks #172 of 867 brands.
4. MaryRuth's
~$550K/mo est. revenue (6% of this list) and ~21.5K units/mo from 4 products; best position #12. Its highest-ranked product here is MaryRuth's Liquid Iron Supplement for Women Men & Kids, 15.22 Fl Oz, Vegan… at #12. Overall it ranks #10 of 867 brands.
5. NovaFerrum
~$527K/mo est. revenue (6% of this list) and ~21K units/mo from 3 products; best position #10. Its highest-ranked product here is NovaFerrum Yummy | Pediatric Drops Liquid Iron Supplement for Infants and… at #10. Overall it ranks #145 of 867 brands.
6. Nature Made
~$495K/mo est. revenue (5% of this list) and ~60.8K units/mo from 2 products; best position #1. Its highest-ranked product here is Nature Made Iron 65 mg (325 mg Ferrous Sulfate) Tablets, 180 Tablets | Iron… at #1. Overall it ranks #1 of 867 brands.
7. Vitron-C
~$365K/mo est. revenue (4% of this list) and ~30.6K units/mo from 2 products; best position #3. Its highest-ranked product here is Vitron-C Iron Supplement Plus Vitamin C, Immunity Support, 60 Ct | Supports… at #3. Overall it ranks #147 of 867 brands.
8. SiderAL
~$299K/mo est. revenue (3% of this list) and ~3.4K units/mo from 1 product; best position #56. Its highest-ranked product here is SiderAL Forte Sucrosomial Iron Supplement for Women and Men - Clinically Proven… at #56. Overall it ranks #534 of 867 brands.
9. Pure Encapsulations
~$271K/mo est. revenue (3% of this list) and ~18.2K units/mo from 2 products; best position #11. Its highest-ranked product here is Pure Encapsulations Iron-C, 60 Capsules | 15 mg - 175 mg Vitamin C, Red Blood… at #11. Overall it ranks #7 of 867 brands.
10. Slow Fe
~$259K/mo est. revenue (3% of this list) and ~18.5K units/mo from 2 products; best position #9. Its highest-ranked product here is Slow Fe 45mg Iron Supplement for Iron Deficiency, Slow Release, 60 Tablets… at #9. Overall it ranks #205 of 867 brands.
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Full Iron ranking
All 61 brands in the list, ordered by rank strength, plus the top 10 products.
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