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L Citrulline

Pass

L Citrulline scores 66 out of 100, a Pass. Shoppers spend an estimated $4.3M a year here, demand is soft, at -1.8% this quarter, and an estimated 0.0% of orders come back.

Flapen Score
66
66 / 100
Top 3% of 14,768 Health & Household niches · +17 vs the category median of 49
Market size
$4.3M/yr1.6M searches / yr
90-day growth
-1.8%search demand this quarter
Competition
47%top-5 click share · 17 brands · 30 sellers

Flapen Score

L Citrulline against its category

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

66Pass
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The L Citrulline market on Amazon at a glance

Shoppers on Amazon United States searched for L Citrulline 1.6M times last year and spent an estimated $4.3M. The top 5 brands take 72% of clicks. Flapen scores it 66 out of 100, a Pass.

01 · Demand

An estimated 11.0% of those searches ended in a purchase.

Shoppers searched for this 1.6M times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 11.0% of those searches ended in a purchase. Searches in the last 90 days moved -1.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated $4.3M a year.

Searches, last 12 months
1.6M
Growth, 90 days vs prior 90
-1.8%
Conversion, latest week
11.0%
Market size, estimated
$4.3Ma year
Peak month
May1.5× the quietest month
Top search term
l citrulline582K searches a year

02 · Price

A sale here is worth $24.70.

Listings sell for $24.70 on average, from $10.10 to $76.27. Amazon reports units sold in ranges. This niche sold 150K to 200K a year. The average listing sells 5,000 to 6,000 of them. At $24.70 that is $124K to $148K a year per listing.

Average price
$24.70inside the $15 to $100 sweet spot
Price range
$10.10–$76.27
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
150K–200K
Units per listing a year
5,000–6,000
Revenue per listing a year
$124K–$148K
Returns
0.0%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is reviews.

90% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 1.5% of listings are out of stock. The average listing ranks #245 within Pre-Workout. It carries 5,971 reviews at 4.53 stars, so a new listing needs social proof before a better product.

Sponsored listings
90%
Prime listings
100%
Out of stock, average day
1.5%
Average rank
#245in Pre-Workout
Average rating
4.53 starsAmazon United States average 4.42 stars
Average reviews
5,971per listing
Listings tracked
29

04 · Newcomers

3 of last year's 3 launches cleared the first-year sales bar.

3 products launched here in the last 12 months. 3 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 64 months on average, so the names here are established.

Launched, last 12 months
3
Successful launches
3Amazon's first-year sales bar
Average brand age
64 months

Products

Top L Citrulline products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 10, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 47% of clicks. Leaders hold, but buyers still shop past them.

$0$171K$342K$513K$685K1001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

17 rising

Sellers

30

Est. top-5 brand share

72%

Top 20: 100%

Est. top-5 click share

47%

Top 20: 91%

Open market

23%

  • Nutricost32%
  • BulkSupplements15%
  • DORADO NUTRITION13%
  • Kaged7%
  • NOW Foods5%
  • HAVASU NUTRITION5%

Demand

L Citrulline search demand

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

40K30KPrime Day '24Prime Day '25Holiday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Search terms

Top L Citrulline search terms shoppers use

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

  • l citrulline582K/yr
  • l-citrulline339K/yr
  • citrulline265K/yr
  • l-citrulline for men80K/yr
  • l citrulline supplements for men87K/yr
  • l citrulline capsules40K/yr
  • citrulina28K/yr
  • citrulina for men13K/yr
  • l citruline16K/yr
  • citruline15K/yr

Reviews and returns

What reviews say buyers love and hate about L Citrulline

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

18%of positive reviews mention “Quality-Overall”
11%of negative reviews mention “Functionality-Overall”
<0.1%of orders come back, a rate Amazon rounds to zero
“Didn't work”
A buyer, on “Functionality-Overall”11% 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.

17 topics

NegativePositive

FAQ

Common L Citrulline questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data