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L Arginine

Maybe

Returns run at only 0.1% of orders. But demand is soft, at -5.8% this quarter, so L Arginine is a Maybe.

Flapen Score
54
54 / 100
Top 25% of 2,035 Health & Personal Care niches · +6 vs the category median of 48
Market size
£156K/yr157K searches / yr
90-day growth
-5.8%search demand this quarter
Competition
51%top-5 click share · 16 brands · 37 sellers

Flapen Score

L Arginine against its category

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

54Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The L Arginine market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for L Arginine 157K times last year and spent an estimated £156K. The top 5 brands take 67% of clicks. Flapen scores it 54 out of 100, a Maybe.

01 · Demand

9.2% of searches ended in a purchase last week.

Shoppers searched for this 157K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 9.2% of those searches ended in a purchase. Searches in the last 90 days moved -5.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated £156K a year.

Searches, last 12 months
157K
Growth, 90 days vs prior 90
-5.8%
Conversion, latest week
9.2%
Market size, estimated
£156Ka year
Peak month
November1.4× the quietest month
Top search term
l arginine66K searches a year

02 · Price

A sale here is worth £10.85.

Listings sell for £10.85 on average, from £3.06 to £18.79. Amazon reports units sold in ranges. This niche sold 13K to 15K a year. The average listing sells 500 to 750 of them. At £10.85 that is £5K to £8K a year per listing.

Average price
£10.85under the $15 to $100 sweet spot
Price range
£3.06–£18.79
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
13K–15K
Units per listing a year
500–750
Revenue per listing a year
£5K–£8K
Returns
0.1%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

79% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 1.0% of listings are out of stock. The average listing ranks #19 within Amino Acids. It carries 2,767 reviews at 4.33 stars, so a new listing needs social proof before a better product.

Sponsored listings
79%
Prime listings
100%
Out of stock, average day
1.0%
Average rank
#19in Amino Acids
Average rating
4.33 starsAmazon United Kingdom average 4.36 stars
Average reviews
2,767per listing
Listings tracked
24

04 · Newcomers

Amazon counts 0 of last year's 1 launches as successful.

1 products launched here in the last 12 months. Amazon counts 0 of them as successful launches, new products that hit its first-year sales bar. The brands on the shelf have sold for 46 months on average, so the names here are settling in.

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

Products

Top L Arginine 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 51% of clicks. Leaders hold, but buyers still shop past them.

£0£6K£12K£19K£25K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

Brands

16 falling

Sellers

37

Top-5 brand share

67%

Top 20: 100%

Top-5 click share

51%

Top 20: 96%

Open market

25%

  • Best Naturals20%
  • Horbäach16%
  • Solgar15%
  • Vitamaze - amazing life9%
  • HAVASU NUTRITION8%
  • ALPHA018%

Demand

L Arginine search demand

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

5K3KSpike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Search terms

Top L Arginine search terms shoppers use

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

  • l arginine66K/yr
  • l-arginine38K/yr
  • arginine24K/yr
  • arginine supplement8K/yr
  • larginine5K/yr
  • l arginine 1000mg capsules6K/yr
  • larginine supplements men4K/yr
  • l-arginine nutritional supplements3K/yr
  • l arginine supplements for men3K/yr

Reviews and returns

What reviews say buyers love and hate about L Arginine

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

Complain

Functionality-Overall17%−0.22

No idea whether they work or not

No effect

Done nothing for me

Value For Money10%−0.08

Overpriced

Waste of money

Waste of good money

Advertised Vs Actual Product8%−0.03

Very misleading

Bit misleading to say the least

Very misleading name/label

Dosage8%−0.07

Amoyyou have to take

Taken the suggested dosage for 8 weeks and zero effect, other than losing £15

the advertising implies that there is 3000mg of ingredients in each capsule which is incorrect

Side Effects8%−0.01

Appears to have an aphrodisiac side effect

Personally I didn't experience any effects

see how they affect you first

Love

Quality-Overall29%+1.71

so far no complaints

Excellent product

Good quality

Value For Money12%−0.08

fair price

Good value

Excellent value for money

Advertised Vs Actual Product7%−0.03

does the job

As described

Does exactly what it says

Efficiency7%+0.20

Seems effective and simple to take

Seems to be working for its purposes

It works

Blood Pressure5%+0.34

This supplement has really sorted out my BP

excellent item as aids circulation when you have Raynaud's

Lower Blood Pressure without Side Effects

Return

0.1% Return rate 8% Fixable by listing

Ease Of Chewing/Swallowing25%▁▁█▁▁▁
Functionality-Overall17%▁▁▁█▁▁

No idea whether they work or not

No effect

Done nothing for me

Bitter17%▁▁▁▁█▁
Dosage17%▁▁▁▁█▁

Amoyyou have to take

Taken the suggested dosage for 8 weeks and zero effect, other than losing £15

the advertising implies that there is 3000mg of ingredients in each capsule which is incorrect

Size-Overall8%▁█▁▁▁▁

FAQ

Common L Arginine questions

Answered from the same tracked data.