Is carnosine profitable to sell on Amazon United States?

The niche generates $353K/yr across 15 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +33.6%. Flapen's verdict: Worth a look (55/100).

How competitive is the carnosine niche?

9 brands and 25 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 84% of demand.

What do buyers complain about in carnosine?

Top complaints mined from reviews: Acid Regulator/Stomach Ache Relief, Dosage, Ingredients-Overall. The return rate is 0.0%.

When does demand for carnosine peak?

Demand peaks in Jun–Jul–Aug; the busiest month runs 2.7× the quietest.

What does it cost to enter the carnosine niche?

Listings span $17.70–$145.69; the average listing price is $39.43 (sweet spot $15–$100). The average incumbent carries 347 reviews — the moat a new listing must climb.

carnosine

Worth a look

Shows low returns (0.0%), but strong incumbent ratings (4.6★) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$39.43

avg listing price — sweet spot $15–$100

Review moat

Great347.2

avg incumbent reviews — the moat a new listing must climb

Price range

Good$17.70–$145.69

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Good+33.6%

90-day search growth — must beat 0% to launch

Market size

Good$353K

$353K/yr · 211K searches

Conversion

Good4.3%

search→purchase rate — share of searches ending in a sale

Brand share

Okay84%

top-5 brand share — brands hold most of the demand

Competition

Okay64%

top-5 click share — leaders hold, buyers still browse

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, carnosine is a $353K/yr Amazon United States market (211K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Jun–Jul–Aug. Verdict: Worth a look — 55/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

carnosine market data

Units sold / yr: 15K–20K; avg 500–750/product
Revenue / yr: $591K–$789K; units × avg price
Conversion rate: 4.3%
Avg BSR: #3,722
Page quality: 0%
Prime: 93%
Sponsored: 80%
Out of stock: 11.5%
Avg brand age: 88 months
Avg seller age: 178 days

Competition & brand share

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.

Brands

9 falling

Sellers

Top-5 brand share

84%

Top 20: 100%

Top-5 click share

64%

Top 20: 100%

Open market

10%

Herbounty22%
NOW Foods20%
Nutricost17%
Life Extension13%
BulkSupplements11%
Horbäach7%
Open — no brand owns it (3 brands, 10%)

Demand & seasonality

Weekly Amazon search volume, last 102 weeks — +33.6% search growth over the last 90 days.

Peak months: Jun, Jul, Aug · busiest ÷ quietest = 2.7×

Open Trend

Top carnosine search terms

l-carnosine27K/yr +192.7%2.8% conv.
carnosine supplement50K/yr +77.7%2.3% conv.
l carnosine28K/yr +80.4%4.6% conv.
carnosine87K/yr -31.7%6.9% conv.
carnosic acid5K/yr -19.7%2.1% conv.
l carnosine 500mg3K/yr +0.3%15.2% conv.
l carnosine supplement6K/yr -62.5%7.9% conv.
carnosic acid supplement3K/yr -62.1%4.0% conv.
carnosine supplements2K/yr -65.4%5.1% conv.

All search terms

Top carnosine products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Herbounty L-Carnosine Supplement 500mg 120 Capsules Vitality Support

Herbounty$22.265.0★8 rev

Nutricost L-Carnosine 500mg 120 Capsules - Gluten Free & Non-GMO

Nutricost$34.264.6★309 rev

NOW Foods Supplements L-Carnosine (Beta-Alanyl-L-Histidine) 500 mg Healthy Aging 100 Veg Capsules

NOW Foods$31.564.6★1,197 rev

NOW Foods Supplements L-Carnosine (Beta-Alanyl-L-Histidine) 500 mg Healthy Aging 50 Veg Capsules

NOW Foods$17.704.6★1,197 rev

BulkSupplements.com L-Carnosine Powder - Antioxidant Support Supplement - Gluten Free 500mg per Serving 50g (1.8 oz) (Pack of 1)

BulkSupplements$21.554.6★475 rev

Newest

by launch date

Herbounty L-Carnosine Supplement 500mg 120 Capsules Vitality Support

Herbounty$22.268 rev

2mo ago

LongLifeNutri L-Carnosine 1000mg - Beta-Alanyl-L-Histidine Supplement for Cellular Energy & Brain Clarity 120 Vegetarian Capsules 2-Month Supply GMP Certified Made in USA

LongLifeNutri$35.7360 rev

1y ago

BulkSupplements.com L-Carnosine Capsules - Carnosine Supplement Antioxidants Supplement Carnosine 500mg - Gluten Free 1 Capsule per Serving 90 Capsules (Pack of 1)

BulkSupplements$24.5045 rev

2y ago

Horbach L-Carnosine 500mg | 120 Capsule Supplement | Powder Pills

Horbäach$24.85146 rev

2y ago

Nutricost L-Carnosine Powder 100 Grams (200 Servings) - Non-GMO

Nutricost$43.84137 rev

6y ago

What buyers say about carnosine

What buyers praise and complain about, mined from review topics.

What buyers love

Regulates Digestion12%

“Gut repair”

Acid Regulator/Stomach Ache Relief12%

“no stomach upset”

Quality-Overall11%

“quality seems consistent”

Value For Money8%

“Price is reasonable”

Efficiency6%

“Very Effective”

Nutritional Content6%

“I feel that it's keeping me healthier”

Vitamin4%

“Well-Sealed Supplement”

Dosage4%

“The labeling emphasizes very high-strength dosing”

Ingredients-Overall3%

“clean formula”

Taste-Overall2%

“The capsules are clean with no aftertaste”

What buyers complain about

Acid Regulator/Stomach Ache Relief13%

“Stomach Pains”

Dosage10%

“I personally chose not to take this supplement”

Ingredients-Overall7%

“Did the formula change? Drastically? Contaminated? Something is going on with this”

Nutritional Content6%

“Changing my diet did very little to help”

Cough Relief5%

“Doesn't work for my gut”

Oral Hygiene5%

“Oral Carnosine supplementation is a total waste of money”

Pain Relief-Overall5%

“Pain, unbearable pain”

Regulates Digestion4%

“Contaminated”

Certifications3%

“Interesting Supplement; Not NSF Certified”

Value For Money2%

“also added cost”

Top return reasons

Advertised Vs Actual Product50%

Joint Pain50%

Common questions

Is carnosine profitable to sell on Amazon United States?: The niche generates $353K/yr across 15 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +33.6%. Flapen's verdict: Worth a look (55/100).
How competitive is the carnosine niche?: 9 brands and 25 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 84% of demand.
What do buyers complain about in carnosine?: Top complaints mined from reviews: Acid Regulator/Stomach Ache Relief, Dosage, Ingredients-Overall. The return rate is 0.0%.
When does demand for carnosine peak?: Demand peaks in Jun–Jul–Aug; the busiest month runs 2.7× the quietest.
What does it cost to enter the carnosine niche?: Listings span $17.70–$145.69; the average listing price is $39.43 (sweet spot $15–$100). The average incumbent carries 347 reviews — the moat a new listing must climb.