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L Theanine

Maybe

Returns run at only 0.0% of orders. But prices span $4.98–$17.18, mostly outside the sweet spot, so L Theanine is a Maybe.

Flapen Score
53
53 / 100
Top 29% of 2,035 Health & Personal Care niches · +5 vs the category median of 48
Market size
£742K/yr580K searches / yr
90-day growth
+1.8%search demand this quarter
Competition
73%top-5 click share · 14 brands · 18 sellers

Flapen Score

L Theanine against its category

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

53Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The L Theanine market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for L Theanine 580K times last year and spent an estimated £742K. The top 5 brands take 73% of clicks. Demand peaks in Apr–May. Flapen scores it 53 out of 100, a Maybe.

01 · Demand

14.8% of searches ended in a purchase last week.

Shoppers searched for this 580K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 14.8% 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 £742K a year.

Searches, last 12 months
580K
Growth, 90 days vs prior 90
+1.8%
Conversion, latest week
14.8%
Market size, estimated
£742Ka year
Peak month
April2.0× the quietest month
Top search term
l theanine265K searches a year

02 · Price

A sale here is worth £8.63.

Listings sell for £8.63 on average, from £4.98 to £17.18. Amazon reports units sold in ranges. This niche sold 60K to 80K a year. The average listing sells 5,000 to 6,000 of them. At £8.63 that is £43K to £52K a year per listing.

Average price
£8.63under the $15 to $100 sweet spot
Price range
£4.98–£17.18
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
60K–80K
Units per listing a year
5,000–6,000
Revenue per listing a year
£43K–£52K
Returns
0.0%of orders · Amazon United Kingdom median 0.6%

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, 10.3% of listings are out of stock. The average listing ranks #120 within Over-the-Counter Medication. It carries 1,516 reviews at 4.41 stars, so a new listing needs social proof before a better product.

Sponsored listings
93%
Prime listings
100%
Out of stock, average day
10.3%
Average rank
#120in Over-the-Counter Medication
Average rating
4.41 starsAmazon United Kingdom average 4.36 stars
Average reviews
1,516per listing
Listings tracked
15

04 · Newcomers

Amazon counts 2 of last year's 4 launches as successful.

4 products launched here in the last 12 months. Amazon counts 2 of them as successful launches, new products that hit its first-year sales bar. The brands on the shelf have sold for 36 months on average, so the names here are settling in.

Launched, last 12 months
4
Successful launches
2Amazon's first-year sales bar
Average brand age
36 months

Products

Top L Theanine 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 73% of clicks. A locked shelf that new listings rarely crack.

£0£74K£148K£223K£297K101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

14 falling

Sellers

18

Top-5 brand share

73%

Top 20: 100%

Top-5 click share

73%

Top 20: 100%

Open market

18%

  • NUTRINATION22%
  • NEW LEAF PRODUCTS21%
  • Nutrivo12%
  • Nutricost10%
  • SS Sport Supplies9%
  • WeightWorld8%

Demand

L Theanine search demand

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

13K8KSpike '24Spike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Apr, May · busiest ÷ quietest = 2.0×

Search terms

Top L Theanine search terms shoppers use

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

  • l theanine265K/yr
  • l-theanine169K/yr
  • l theanine 400mg22K/yr
  • ltheanine25K/yr
  • theanine26K/yr
  • l-theanine 400mg10K/yr
  • suntheanine7K/yr
  • l theanine supplement34K/yr
  • l theanine 100mg5K/yr
  • l- theanine5K/yr

Reviews and returns

What reviews say buyers love and hate about L Theanine

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

Complain

Dosage9%−0.08

Not enough to be clinically effective at all

400 mg is way too high for me personally

be mindful of the dosage

Sleep Quality8%+0.62

Didn't help with Sleep

was not sleeping very well

No improvement in sleep yet

Smell8%−0.09

Smelled absolutely awful

Strong smell now

However this bag really smells

Ingredients-Overall6%−0.06

Ingredients have changed

Low quality, much lower amount of active ingredient than stated

Very disappointed in the reports of independent third party testing showing that this product has almost zero active ingredient

Side Effects5%−0.05

After taking these for a few day I was experiencing really bad pain in my abdomen

Gave me headaches

It seems to have a slight effect

Love

Sleep Quality15%+0.62

Helpful for sleep

Great sleep quality

Helps me sleep

Quality-Overall11%+0.77

appears to be well made

Overall, a solid product that does exactly what I hoped it would

Excellent product

Stress/Anxiety9%+0.76

Great for anxiety

Works really well for anxiety

Really helped with my anxiety

Value For Money9%+0.81

Good value for money

Good Value for money

Fantastic price

Focus Enhancement5%+0.20

less brain fog

i do believe my concentration has improved

Helps my focus

Return

0.0% Return rate 0% Fixable by listing

Certifications100%▁▁█▁▁▁

FAQ

Common L Theanine questions

Answered from the same tracked data.