SuppRankedTop 10 acetyl-l-carnitine brands on Amazon (estimated revenue)
Ranked by estimated monthly revenue from Amazon's Acetyl-L-Carnitine Best Sellers top 100. Updated October 15, 2026.
Nutricost is the top-selling acetyl-l-carnitine brand on Amazon by estimated revenue, at about $1.4M/mo from 7 products in the Acetyl-L-Carnitine Best Sellers top 100. That is about the same as #2 NOW Foods (~$1.3M/mo). The list is fragmented: the top 3 brands take about 31% of its estimated sales and the top 10 about 64%, spread across 52 brands in total. All figures are modeled estimates, not Amazon data.
| # | Brand | Est. revenue/mo |
|---|---|---|
| 1 | Nutricost12% share · best #2 | $1.4M |
| 2 | NOW Foods11% share · best #6 | $1.3M |
| 3 | NaturaLife Labs8% share · best #1 | $937K |
| 4 | THORNE8% share · best #4 | $906K |
| 5 | Pure Encapsulations7% share · best #29 | $806K |
| 6 | BulkSupplements6% share · best #13 | $655K |
| 7 | Jarrow Formulas3% share · best #9 | $385K |
| 8 | Designs for Health3% share · best #53 | $362K |
| 9 | Horbäach3% share · best #15 | $348K |
| 10 | Needed3% share · best #17 | $335K |
The top 10, brand by brand
1. Nutricost
~$1.4M/mo est. revenue (12% of this list) and ~77K units/mo from 7 products; best position #2. Its highest-ranked product here is Nutricost Acetyl L-Carnitine (ALCAR) 500mg, 180 Capsules | GMO-Free and Gluten… at #2. Overall it ranks #2 of 3,479 brands.
2. NOW Foods
~$1.3M/mo est. revenue (11% of this list) and ~41.6K units/mo from 6 products; best position #6. Its highest-ranked product here is NOW Supplements, Acetyl-L Carnitine 500 mg, Brain Energy*, 200 Veg Caps at #6. Overall it ranks #1 of 3,479 brands.
3. NaturaLife Labs
~$937K/mo est. revenue (8% of this list) and ~55.7K units/mo from 2 products; best position #1. Its highest-ranked product here is NaturaLife Labs Acetyl L-Carnitine (ALCAR) 1500 mg per Serving – 100 Capsules… at #1. Overall it ranks #126 of 3,479 brands.
4. THORNE
~$906K/mo est. revenue (8% of this list) and ~23K units/mo from 2 products; best position #4. Its highest-ranked product here is THORNE Acetyl-L-Carnitine, 500 mg per Capsule, 60 Capsules | Supports Cognitive… at #4. Overall it ranks #8 of 3,479 brands.
5. Pure Encapsulations
~$806K/mo est. revenue (7% of this list) and ~12.3K units/mo from 4 products; best position #29. Its highest-ranked product here is Pure Encapsulations L-Carnitine, 60 Capsules | Hypoallergenic Supplement for… at #29. Overall it ranks #3 of 3,479 brands.
6. BulkSupplements
~$655K/mo est. revenue (6% of this list) and ~25.8K units/mo from 4 products; best position #13. Its highest-ranked product here is BulkSupplements.com N-Acetyl Cysteine (NAC) Powder - 250g (Pack of 1)… at #13. Overall it ranks #9 of 3,479 brands.
7. Jarrow Formulas
~$385K/mo est. revenue (3% of this list) and ~15.7K units/mo from 3 products; best position #9. Its highest-ranked product here is Jarrow N-A-C Sustain 600 mg, Dietary Supplement, 60 Tablets | NAC 600mg… at #9. Overall it ranks #32 of 3,479 brands.
8. Designs for Health
~$362K/mo est. revenue (3% of this list) and ~5.6K units/mo from 2 products; best position #53. Its highest-ranked product here is Designs for Health Acetyl L-Carnitine, Brain Support, 90 Capsules | Acetyl… at #53. Overall it ranks #26 of 3,479 brands.
9. Horbäach
~$348K/mo est. revenue (3% of this list) and ~17.3K units/mo from 3 products; best position #15. Its highest-ranked product here is Horbäach NAC N-Acetyl Cysteine Supplement 1200mg | 250 Powder Capsules | with… at #15. Overall it ranks #7 of 3,479 brands.
10. Needed
~$335K/mo est. revenue (3% of this list) and ~6.7K units/mo from 1 product; best position #17. Its highest-ranked product here is Needed. Egg Quality Support, 60 Capsules, 30 Day Supply | Optimally Formulated… at #17. Overall it ranks #283 of 3,479 brands.
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Full Acetyl-L-Carnitine ranking
All 52 brands in the list, ordered by rank strength, plus the top 10 products.
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