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Leucine

Maybe

An estimated 0.0% of orders come back. But the top 5 products take 76% of clicks, so Leucine is a Maybe.

Flapen Score
61
61 / 100
Top 9% of 14,768 Health & Household niches · +12 vs the category median of 49
Market size
$751K/yr341K searches / yr
90-day growth
+46.5%search demand this quarter
Competition
76%top-5 click share · 10 brands · 23 sellers

Flapen Score

Leucine against its category

The dotted line is the Health & Household average. Past it, Leucine is stronger. Inside it, weaker.

61Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Leucine market on Amazon at a glance

Shoppers on Amazon United States searched for Leucine 341K times last year and spent an estimated $751K. The top 5 brands take 88% of clicks. Demand peaks in Jul. Flapen scores it 61 out of 100, a Maybe.

01 · Demand

An estimated 9.2% of those searches ended in a purchase.

Shoppers searched for this 341K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 9.2% of those searches ended in a purchase. Searches in the last 90 days moved +46.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $751K a year.

Searches, last 12 months
341K
Growth, 90 days vs prior 90
+46.5%
Conversion, latest week
9.2%
Market size, estimated
$751Ka year
Peak month
July1.7× the quietest month
Top search term
leucine128K searches a year

02 · Price

A sale here is worth $23.91.

Listings sell for $23.91 on average, from $13.21 to $53.21. Amazon reports units sold in ranges. This niche sold 30K to 40K a year. The average listing sells 2,500 to 3,000 of them. At $23.91 that is $60K to $72K a year per listing.

Average price
$23.91inside the $15 to $100 sweet spot
Price range
$13.21–$53.21
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
30K–40K
Units per listing a year
2,500–3,000
Revenue per listing a year
$60K–$72K
Returns
0.0%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is ads and reviews.

93% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #257 within Amino Acids. It carries 1,603 reviews at 4.49 stars, so a new listing needs social proof before a better product.

Sponsored listings
93%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#257in Amino Acids
Average rating
4.49 starsAmazon United States average 4.42 stars
Average reviews
1,603per listing
Listings tracked
14

04 · Newcomers

0 of last year's 1 launches cleared the first-year sales bar.

1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 71 months on average, so the names here are established.

Launched, last 12 months
1
Successful launches
0Amazon's first-year sales bar
Average brand age
71 months

Products

Top Leucine products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 76% of clicks. A locked shelf that new listings rarely crack.

Brands

10 flat

Sellers

23

Top-5 brand share

88%

Top 20: 100%

Top-5 click share

76%

Top 20: 100%

Open market

9%

  • Brand 157%
  • Brand 217%
  • Brand 37%
  • Brand 45%
  • Brand 53%
  • Brand 63%
  • Open — no brand owns it (4 brands, 9%)

Demand

Leucine search demand

Weekly searches over the year, seasonality beneath. Pick a range.

10K6KSpike '24Holiday '24Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jul · busiest ÷ quietest = 1.7×

Search terms

Top Leucine search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • leucine128K/yr
  • leucine supplements58K/yr
  • l leucine25K/yr
  • l-leucine23K/yr
  • leucine and velositol supplement6K/yr
  • lucine amino acids supplement13K/yr
  • leucine amino acids supplement4K/yr
  • leucine amino acid14K/yr
  • leucine capsules15K/yr
  • leucina12K/yr

Reviews and returns

What reviews say buyers love and hate about Leucine

We read the reviews and the return reasons for every product selling here.

22%of positive reviews mention “Quality-Overall”
13%of negative reviews mention “Taste-Overall”
<0.1%of orders come back, a rate Amazon rounds to zero
“Bitter tasting”
A buyer, on “Taste-Overall”13% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

19 topics

NegativePositive

FAQ

Common Leucine questions

Answered from the same tracked data.