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L Citrulline

Fail

The top 5 brands take 95% of clicks, so L Citrulline is a Fail.

Flapen Score
43
43 / 100
Ranks 1,437 of 2,035 Health & Personal Care niches · −5 vs the category median of 48
Market size
£173K/yr175K searches / yr
90-day growth
-11.5%search demand this quarter
Competition
83%top-5 click share · 7 brands · 21 sellers

Flapen Score

L Citrulline against its category

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

43Fail
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 Kingdom searched for L Citrulline 175K times last year and spent an estimated £173K. The top 5 brands take 95% of clicks. Demand peaks in May. Flapen scores it 43 out of 100, a Fail.

01 · Demand

10.2% of searches ended in a purchase last week.

Shoppers searched for this 175K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 10.2% of those searches ended in a purchase. Searches in the last 90 days moved -11.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated £173K a year.

Searches, last 12 months
175K
Growth, 90 days vs prior 90
-11.5%
Conversion, latest week
10.2%
Market size, estimated
£173Ka year
Peak month
May1.6× the quietest month
Top search term
l citrulline73K searches a year

02 · Price

A sale here is worth £9.67.

Listings sell for £9.67 on average, from £6.52 to £16.42. Amazon reports units sold in ranges. This niche sold 15K to 20K a year. The average listing sells 1,250 to 1,500 of them. At £9.67 that is £12K to £15K a year per listing.

Average price
£9.67under the $15 to $100 sweet spot
Price range
£6.52–£16.42
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
15K–20K
Units per listing a year
1,250–1,500
Revenue per listing a year
£12K–£15K
Returns
0.0%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is low.

80% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 4.9% of listings are out of stock. The average listing ranks #7 within Amino Acids. It carries 726 reviews at 4.34 stars, so a new listing needs social proof before a better product.

Sponsored listings
80%
Prime listings
100%
Out of stock, average day
4.9%
Average rank
#7in Amino Acids
Average rating
4.34 starsAmazon United Kingdom average 4.36 stars
Average reviews
726per listing
Listings tracked
10

04 · Newcomers

Amazon counts 1 of last year's 1 launches as successful.

1 products launched here in the last 12 months. Amazon counts 1 of them as successful launches, new products that hit its first-year sales bar. The brands on the shelf have sold for 55 months on average, so the names here are settling in.

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

Products

Top L Citrulline products & what they sell for

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

Competition

Competition: brands, sellers & click share

The top 5 products take 83% of clicks. A locked shelf that new listings rarely crack.

£0£17K£35K£52K£69K101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

7 falling

Sellers

21

Top-5 brand share

95%

Top 20: 100%

Top-5 click share

83%

Top 20: 100%

Open market

2%

  • WeightWorld40%
  • Applied Nutrition17%
  • EVO NUTRITION16%
  • ALPHA0114%
  • Best Naturals9%
  • Bulk3%
  • Open — no brand owns it (1 brand, 2%)

Demand

L Citrulline search demand

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

5K4KSpike '24Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: May · busiest ÷ quietest = 1.6×

Search terms

Top L Citrulline search terms shoppers use

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

  • l citrulline73K/yr
  • l-citrulline45K/yr
  • citrulline28K/yr
  • l- citrulline8K/yr
  • l citrulline capsules12K/yr
  • l-citrulline capsules4K/yr
  • lcitrulline3K/yr
  • citruline3K/yr

Reviews and returns

What reviews say buyers love and hate about L Citrulline

What buyers praise, what they complain about and why they send it back, from the reviews.

Complain

Dosage13%−0.06

Can't say if they've done anything for me after taking 180 tablets

I'm not one for following tablet regimes accurately

It is only half the dose of L-Citrulline

Taste-Overall12%−0.06

have no taste

Appears tasteless

The taste is a little tart

Functionality-Overall7%−0.08

Not working

Did not work for

I haven't find any difference

Ingredients-Overall6%−0.09

Very poor quality as the main ingredient is corn starch which is just a filler

Turns out their ingredients are bad

Largest ingredient: brown rice flour

Size-Overall4%−0.02

They are small

tablets large

though quite large

Love

Quality-Overall20%+1.02

Well-made, easy to take

Great quality + quick delivery

Excellent product

Value For Money11%+0.28

Good value

low price

Good value for money

Advertised Vs Actual Product10%+0.58

As advertised well pleased

Works as said

As described

Ease Of Chewing/Swallowing7%

easy to take without any gut issues

Easy to swallow

The pills are easy to swallow, I have noticed a slight increase in endurance when running & training, l also seem to have a little more energy, I dont know if this is coincidental

Blood Pressure6%+0.36

blood pressure is good

seems to help my blood pressure

This supplement has really sorted out my BP

FAQ

Common L Citrulline questions

Answered from the same tracked data.