SuppRankedTop 10 selenium brands on Amazon (estimated revenue)
Ranked by estimated monthly revenue from Amazon's Selenium Best Sellers top 100. Updated October 15, 2026.
THORNE is the top-selling selenium brand on Amazon by estimated revenue, at about $682K/mo from 1 product in the Selenium Best Sellers top 100. That is about 15% more than #2 Pure Encapsulations (~$595K/mo). The list is fragmented: the top 3 brands take about 25% of its estimated sales and the top 10 about 51%, spread across 59 brands in total. All figures are modeled estimates, not Amazon data.
| # | Brand | Est. revenue/mo |
|---|---|---|
| 1 | THORNE9% share · best #1 | $682K |
| 2 | Pure Encapsulations8% share · best #2 | $595K |
| 3 | NOW Foods7% share · best #5 | $524K |
| 4 | Bronson Vitamins5% share · best #3 | $395K |
| 5 | Nutricost4% share · best #4 | $326K |
| 6 | Standard Process4% share · best #43 | $324K |
| 7 | Carlson Labs3% share · best #67 | $250K |
| 8 | Pharma Nord3% share · best #29 | $232K |
| 9 | Rootcology3% share · best #16 | $192K |
| 10 | Life Extension2% share · best #6 | $182K |
The top 10, brand by brand
1. THORNE
~$682K/mo est. revenue (9% of this list) and ~48.7K units/mo from 1 product; best position #1. Its highest-ranked product here is THORNE Selenium, 200 mcg L-Selenomethionine Supplement, 60 Capsules | Supports… at #1. Overall it ranks #8 of 3,479 brands.
2. Pure Encapsulations
~$595K/mo est. revenue (8% of this list) and ~35.4K units/mo from 2 products; best position #2. Its highest-ranked product here is Pure Encapsulations Selenium, 200 mcg | For Healthy Cellular Function, Immune… at #2. Overall it ranks #3 of 3,479 brands.
3. NOW Foods
~$524K/mo est. revenue (7% of this list) and ~43.6K units/mo from 5 products; best position #5. Its highest-ranked product here is NOW Supplements, Selenium 100 mcg, Essential Mineral, 100 Tabs at #5. Overall it ranks #1 of 3,479 brands.
4. Bronson Vitamins
~$395K/mo est. revenue (5% of this list) and ~31.7K units/mo from 2 products; best position #3. Its highest-ranked product here is Bronson Selenium 200 mcg Albion Chelated Amino Acid Complex, 250 Capsules… at #3. Overall it ranks #17 of 3,479 brands.
5. Nutricost
~$326K/mo est. revenue (4% of this list) and ~23.7K units/mo from 2 products; best position #4. Its highest-ranked product here is Nutricost Selenium 200mcg, 240 Vegetarian Capsules, L-Selenomethionine | Gluten… at #4. Overall it ranks #2 of 3,479 brands.
6. Standard Process
~$324K/mo est. revenue (4% of this list) and ~6.8K units/mo from 2 products; best position #43. Its highest-ranked product here is Standard Process Cataplex E2, Heart & Cellular Health Support, 90 Tablets… at #43. Overall it ranks #51 of 3,479 brands.
7. Carlson Labs
~$250K/mo est. revenue (3% of this list) and ~7K units/mo from 3 products; best position #67. Its highest-ranked product here is Carlson ACES, Vitamins A, C, E + Selenium, Cellular Health, 50 Softgels… at #67. Overall it ranks #63 of 3,479 brands.
8. Pharma Nord
~$232K/mo est. revenue (3% of this list) and ~6.6K units/mo from 2 products; best position #29. Its highest-ranked product here is Pharma Nord SelenoPrecise Selenium 100 mcg - High Absorption - 150 Tablets… at #29. Overall it ranks #1157 of 3,479 brands.
9. Rootcology
~$192K/mo est. revenue (3% of this list) and ~7K units/mo from 1 product; best position #16. Its highest-ranked product here is Rootcology Selenium + Myo-Inositol by Dr. Izabella Wentz | 60 Servings… at #16. Overall it ranks #1371 of 3,479 brands.
10. Life Extension
~$182K/mo est. revenue (2% of this list) and ~18.3K units/mo from 2 products; best position #6. Its highest-ranked product here is Life Extension Super Selenium Complex, 200 mcg, 1 Daily, 100 Capsules | 3 Forms… at #6. Overall it ranks #11 of 3,479 brands.
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Full Selenium ranking
All 59 brands in the list, ordered by rank strength, plus the top 10 products.
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