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L Arginine

Maybe

An estimated 0.1% of orders come back. 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

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

Shoppers searched for this 157K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 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

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 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

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 25, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 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

Est. top-5 brand share

67%

Top 20: 100%

Est. 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 estimated 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

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

29%of positive reviews mention “Quality-Overall”
17%of negative reviews mention “Functionality-Overall”
0.1%of orders come back
“No idea whether they work or not”
A buyer, on “Functionality-Overall”17% 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.

20 topics

NegativePositive

FAQ

Common L Arginine 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