SuppRankedTop 10 b8 (inositol) brands on Amazon (estimated revenue)
Ranked by estimated monthly revenue from Amazon's B8 (Inositol) Best Sellers top 100. Updated October 15, 2026.
Theralogix is the top-selling b8 (inositol) brand on Amazon by estimated revenue, at about $1.5M/mo from 4 products in the B8 (Inositol) Best Sellers top 100. That is about 53% more than #2 Wholesome Story (~$999K/mo). The list is tightly concentrated: the top 3 brands take about 55% of its estimated sales and the top 10 about 77%, spread across 56 brands in total. About 9% of the products are gummies. All figures are modeled estimates, not Amazon data.
| # | Brand | Est. revenue/mo |
|---|---|---|
| 1 | Theralogix29% share · best #5 | $1.5M |
| 2 | Wholesome Story19% share · best #1 | $999K |
| 3 | Optify7% share · best #3 | $375K |
| 4 | NOW Foods5% share · best #6 | $241K |
| 5 | Peach4% share · best #4 | $192K |
| 6 | Pure Encapsulations3% share · best #18 | $166K |
| 7 | Designs for Health3% share · best #38 | $162K |
| 8 | Zazzee3% share · best #14 | $153K |
| 9 | Nutricost2% share · best #9 | $118K |
| 10 | MEDCHOICE2% share · best #11 | $108K |
The top 10, brand by brand
1. Theralogix
~$1.5M/mo est. revenue (29% of this list) and ~18.3K units/mo from 4 products; best position #5. Its highest-ranked product here is Theralogix Ovasitol Canister – Fertility & Hormone Health, NSF Certified… at #5. Overall it ranks #183 of 3,479 brands.
2. Wholesome Story
~$999K/mo est. revenue (19% of this list) and ~36K units/mo from 2 products; best position #1. Its highest-ranked product here is Wholesome Story Myo-Inositol & D-Chiro Inositol Supplement for Women… at #1. Overall it ranks #186 of 3,479 brands.
3. Optify
~$375K/mo est. revenue (7% of this list) and ~15K units/mo from 1 product; best position #3. Its highest-ranked product here is Optify Myo-Inositol & D-Chiro Inositol Supplement for Women | 40:1 Ratio Plus… at #3. Overall it ranks #422 of 3,479 brands.
4. NOW Foods
~$241K/mo est. revenue (5% of this list) and ~8.8K units/mo from 4 products; best position #6. Its highest-ranked product here is NOW Foods L-Theanine, Double Strength 200 mg Per Cap - 180 Veg Capsules… at #6. Overall it ranks #1 of 3,479 brands.
5. Peach
~$192K/mo est. revenue (4% of this list) and ~5.5K units/mo from 1 product; best position #4. Its highest-ranked product here is Peach Perfect Inositol Multivitamin – Myo-Inositol & D-Chiro 40:1 Blend… at #4. Overall it ranks #381 of 3,479 brands.
6. Pure Encapsulations
~$166K/mo est. revenue (3% of this list) and ~3K units/mo from 2 products; best position #18. Its highest-ranked product here is Pure Encapsulations Inositol (Powder), 8.8 Ounces | Supplement to Support… at #18. Overall it ranks #4 of 3,479 brands.
7. Designs for Health
~$162K/mo est. revenue (3% of this list) and ~3.6K units/mo from 3 products; best position #38. Its highest-ranked product here is Designs for Health Thyrommune, Thyroid Support Supplement, 60 Capsules… at #38. Overall it ranks #34 of 3,479 brands.
8. Zazzee
~$153K/mo est. revenue (3% of this list) and ~4.8K units/mo from 3 products; best position #14. Its highest-ranked product here is Zazzee Myo-Inositol Capsules, 2000 mg per Serving, 120 Vegan Capsules | Ideal… at #14. Overall it ranks #37 of 3,479 brands.
9. Nutricost
~$118K/mo est. revenue (2% of this list) and ~6.4K units/mo from 3 products; best position #9. Its highest-ranked product here is Nutricost Myo Inositol & D-Chiro Inositol for Women, 120 Capsules, GMO-Free… at #9. Overall it ranks #2 of 3,479 brands.
10. MEDCHOICE
~$108K/mo est. revenue (2% of this list) and ~4.5K units/mo from 1 product; best position #11. Its highest-ranked product here is MEDCHOICE Myo-Inositol 40:1 Supplement with Folate, Vitamin D3, 120 ct | Daily… at #11. Overall it ranks #254 of 3,479 brands.
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Full B8 (Inositol) ranking
All 56 brands in the list, ordered by rank strength, plus the top 10 products.
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