L Theanine 200mg
FailShoppers spend an estimated $60K a year here, so L Theanine 200mg is a Fail.
- Flapen Score
- 48 / 100Ranks 987 of 2,035 Health & Personal Care niches · on the category median48
- Market size
- £60K/yr38K searches / yr
- 90-day growth
- +9.2%search demand this quarter
- Competition
- 73%top-5 click share · 13 brands · 17 sellers
Flapen Score
L Theanine 200mg against its category
The dotted line is the Health & Personal Care average. Past it, L Theanine 200mg is stronger. Inside it, weaker.
Market
The L Theanine 200mg market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for L Theanine 200mg 38K times last year and spent an estimated £60K. The top 5 brands take 73% of clicks. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 15.5% of those searches ended in a purchase.
Shoppers searched for this 38K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 15.5% of those searches ended in a purchase. Searches in the last 90 days moved +9.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated £60K a year.
- Searches, last 12 months
- 38K
- Growth, 90 days vs prior 90
- +9.2%
- Conversion, latest week
- 15.5%
- Market size, estimated
- £60Ka year
- Top search term
- l theanine 200mg23K searches a year
02 · Price
A sale here is worth £10.22.
Listings sell for £10.22 on average, from £5.53 to £17.81. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 500 to 750 of them. At £10.22 that is £5K to £8K a year per listing.
- Average price
- £10.22under the $15 to $100 sweet spot
- Price range
- £5.53–£17.81
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 5K–6K
- Units per listing a year
- 500–750
- Revenue per listing a year
- £5K–£8K
- Returns
- 0.0%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is ads.
92% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 12.6% of listings are out of stock. The average listing ranks #158 within Over-the-Counter Medication. It carries 1,155 reviews at 4.38 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 92%
- Prime listings
- 100%
- Out of stock, average day
- 12.6%
- Average rank
- #158in Over-the-Counter Medication
- Average rating
- 4.38 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 1,155per listing
- Listings tracked
- 13
04 · Newcomers
2 of last year's 4 launches cleared the first-year sales bar.
4 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 34 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 4
- Successful launches
- 2Amazon's first-year sales bar
- Average brand age
- 34 months
Products
Top L Theanine 200mg 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.
Top sellers
by estimated 90-day click share
Nutricost L-Theanine 200mg 120 Capsules - Non-GMO Gluten Free
- Price
- £6.66
- Rating
- 4.4/5
- Reviews
- 9,555
- Age
- 10y ago

L-Theanine 200mg from Green Tea - 90 Vegan Capsules - Amino Acid Supplement Resealable and Recyclable Pouch by Alpha01
- Price
- £5.66
- Rating
- 4.3/5
- Reviews
- 742
- Age
- 6y ago

Natures Best L Theanine 200mg 60 Capsules (2 Month Supply)
- Price
- £10.71
- Rating
- 4.7/5
- Reviews
- 49
- Age
- 9mo ago

L Theanine 400mg Capsules - 99.6% Pure L-Theanine | 5 Months Supply - 150 Capsules | Supports Relaxation & Focus Promotes Calm | Zero Additives Vegan & Non-GMO | GMP - Certified Lab Tested
- Price
- £9.48
- Rating
- 4.6/5
- Reviews
- 171
- Age
- 1y ago

L-Theanine 200mg Vegan as PhytoSure Certified | Supports Healthy Relaxation & Focus | 3rd Party Tested | Clean Label Non-GMO Gluten & Soy Free Hypoallergenic | by Health Thru Nutrition (Pack of 60)
- Price
- £8.35
- Rating
- 4.0/5
- Reviews
- 126
- Age
- 8y ago
Trending
estimated 90-day click momentum
L Theanine Gummies - 200 mg L-Theanine Supplement with Lemon Balm & Vitamin B6 - Supports Nervous System & Hormonal Function - Vegan Halal - 60 Count - Novomins
- Price
- £11.47
- Rating
- 4.4/5
- Reviews
- 35
- Age
- 6mo ago

L-Theanine 200mg 240 Vegan Capsules High Strength Amino Acid from Green Tea | 8-Month Supply | 98% Pure No Additives | Danish Made
- Price
- £11.49
- Rating
- 4.5/5
- Reviews
- 96
- Age
- 8mo ago

L-Theanine Green Tea Extract with Added Lemon Balm Extract and Chelated Magnesium Glycinate - Derived from Green Tea Leaves - Sleep & Relaxation Support - Mental Clarity
- Price
- £5.53
- Rating
- 4.0/5
- Reviews
- 46
- Age
- 6mo ago

Natures Best L Theanine 200mg 60 Capsules (2 Month Supply)
- Price
- £10.71
- Rating
- 4.7/5
- Reviews
- 49
- Age
- 9mo ago

L Theanine 400mg Capsules - 99.6% Pure L-Theanine | 5 Months Supply - 150 Capsules | Supports Relaxation & Focus Promotes Calm | Zero Additives Vegan & Non-GMO | GMP - Certified Lab Tested
- Price
- £9.48
- Rating
- 4.6/5
- Reviews
- 171
- Age
- 1y ago
Newest
by launch date
L-Theanine Green Tea Extract with Added Lemon Balm Extract and Chelated Magnesium Glycinate - Derived from Green Tea Leaves - Sleep & Relaxation Support - Mental Clarity
- Price
- £5.53
- Rating
- 4.0/5
- Reviews
- 46
- Age
- 6mo ago

L Theanine Gummies - 200 mg L-Theanine Supplement with Lemon Balm & Vitamin B6 - Supports Nervous System & Hormonal Function - Vegan Halal - 60 Count - Novomins
- Price
- £11.47
- Rating
- 4.4/5
- Reviews
- 35
- Age
- 6mo ago

L-Theanine 200mg 240 Vegan Capsules High Strength Amino Acid from Green Tea | 8-Month Supply | 98% Pure No Additives | Danish Made
- Price
- £11.49
- Rating
- 4.5/5
- Reviews
- 96
- Age
- 8mo ago

Natures Best L Theanine 200mg 60 Capsules (2 Month Supply)
- Price
- £10.71
- Rating
- 4.7/5
- Reviews
- 49
- Age
- 9mo ago

L Theanine 400mg Capsules - 99.6% Pure L-Theanine | 5 Months Supply - 150 Capsules | Supports Relaxation & Focus Promotes Calm | Zero Additives Vegan & Non-GMO | GMP - Certified Lab Tested
- Price
- £9.48
- Rating
- 4.6/5
- Reviews
- 171
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 73% of clicks. A locked shelf that new listings rarely crack.
Brands
13 rising
Sellers
17
Est. top-5 brand share
73%
Top 20: 100%
Est. top-5 click share
73%
Top 20: 100%
Open market
22%
- Nutricost41%
- ALPHA0113%
- NATURE'S BEST9%
- NUTRINATION5%
- Health Thru Nutrition5%
- NEW LEAF PRODUCTS5%
Demand
L Theanine 200mg search demand
Weekly searches over the year. Pick a range.
Reviews and returns
What reviews say buyers love and hate about L Theanine 200mg
We read the reviews and the return reasons for every product selling here.
“was not sleeping very well”
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.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common L Theanine 200mg 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









