L Theanine
FailThe top 5 brands take 100% of clicks, so L Theanine is a Fail.
- Flapen Score
- 36 / 100Ranks 102 of 198 Health, Household and Personal Care niches · −1 vs the category median of 3736
- Market size
- $9K/yr4K searches / yr
- 90-day growth
- +1.9%search demand this quarter
- Competition
- 97%top-5 click share · 4 brands · 13 sellers
Flapen Score
L Theanine against its category
The dotted line is the Health, Household and Personal Care average. Past it, L Theanine is stronger. Inside it, weaker.
Market
The L Theanine market on Amazon at a glance
Shoppers on Amazon Singapore searched for L Theanine 4K times last year and spent an estimated $9K. All 4 brands take every click. Flapen scores it 36 out of 100, a Fail.
01 · Demand
An estimated 5.9% of those searches ended in a purchase.
Shoppers searched for this 4K times in the last 12 months. That counts every search on Amazon Singapore for this niche's terms. An estimated 5.9% of those searches ended in a purchase. Searches in the last 90 days moved +1.9% against the 90 days before. Searches, conversion and average price together put the market at an estimated $9K a year.
- Searches, last 12 months
- 4K
- Growth, 90 days vs prior 90
- +1.9%
- Conversion, latest week
- 5.9%
- Market size, estimated
- $9Ka year
- Top search term
- l theanine2K searches a year
02 · Price
A sale here is worth $35.25.
Listings sell for $35.25 on average, from $17.79 to $88.23. Amazon reports units sold in ranges. This niche sold 500 to 750 a year. The average listing sells 0 to 100 of them. At $35.25 that is $0 to $4K a year per listing.
- Average price
- $35.25inside the $15 to $100 sweet spot
- Price range
- $17.79–$88.23
- Amazon Singapore median price
- $30.00across 1,590 niches
- Units sold a year
- 500–750
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$4K
- Returns
- 0.0%of orders · Amazon Singapore median 0.0%
03 · Entry bar
The bar here is low.
17% of listings pay for placement with sponsored ads. 83% ship with Prime. On an average day, 9.0% of listings are out of stock. The average listing ranks #270 within Health, Household and Personal Care. It carries 1,292 reviews at 4.70 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 17%
- Prime listings
- 83%
- Out of stock, average day
- 9.0%
- Average rank
- #270in Health, Household and Personal Care
- Average rating
- 4.70 starsAmazon Singapore average 4.47 stars
- Average reviews
- 1,292per listing
- Listings tracked
- 6
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 75 months on average, so the names here are established.
- Launched, last 12 months
- 1
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 75 months
Products
Top L Theanine 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 24, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Now Foods L-Theanine Double Strength 200 mg 60 Count
- Price
- $20.17
- Rating
- 4.6/5
- Reviews
- 2,410
- Age
- 13y ago

L Theanine 200mg | 400 Capsules | Value Size | Non-GMO Gluten Free Supplement | by Horbaach
- Price
- $31.19
- Rating
- 4.7/5
- Reviews
- 636
- Age
- 4y ago

Thorne Theanine - 200mg of L-Theanine - Support a Healthy Stress Response Relaxation and Focus - Increases Brain Alpha-Wave Production - 90 Capsules
- Price
- $88.23
- Rating
- 4.7/5
- Reviews
- 763
- Age
- 3y ago

L Theanine 400mg | 120 Capsules | Non-GMO & Gluten Free | by Horbaach
- Price
- $17.79
- Rating
- 4.6/5
- Reviews
- 1,849
- Age
- 6y ago

L Theanine 400mg | 400 Capsules Max Size | Non-GMO & Gluten Free | by Horbaach
- Price
- $34.14
- Rating
- 4.6/5
- Reviews
- 2,092
- Age
- 6y ago
Trending
estimated 90-day click momentum
L Theanine 200mg | 400 Capsules | Value Size | Non-GMO Gluten Free Supplement | by Horbaach
- Price
- $31.19
- Rating
- 4.7/5
- Reviews
- 636
- Age
- 4y ago

L Theanine 400mg | 400 Capsules Max Size | Non-GMO & Gluten Free | by Horbaach
- Price
- $34.14
- Rating
- 4.6/5
- Reviews
- 2,092
- Age
- 6y ago

365 by Whole Foods Market L-Theanine 100mg Vegan 60 Count
- Price
- $19.96
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 10mo ago

Now Foods L-Theanine Double Strength 200 mg 60 Count
- Price
- $20.17
- Rating
- 4.6/5
- Reviews
- 2,410
- Age
- 13y ago

Thorne Theanine - 200mg of L-Theanine - Support a Healthy Stress Response Relaxation and Focus - Increases Brain Alpha-Wave Production - 90 Capsules
- Price
- $88.23
- Rating
- 4.7/5
- Reviews
- 763
- Age
- 3y ago
Newest
by launch date
365 by Whole Foods Market L-Theanine 100mg Vegan 60 Count
- Price
- $19.96
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 10mo ago

Thorne Theanine - 200mg of L-Theanine - Support a Healthy Stress Response Relaxation and Focus - Increases Brain Alpha-Wave Production - 90 Capsules
- Price
- $88.23
- Rating
- 4.7/5
- Reviews
- 763
- Age
- 3y ago

L Theanine 200mg | 400 Capsules | Value Size | Non-GMO Gluten Free Supplement | by Horbaach
- Price
- $31.19
- Rating
- 4.7/5
- Reviews
- 636
- Age
- 4y ago

L Theanine 400mg | 120 Capsules | Non-GMO & Gluten Free | by Horbaach
- Price
- $17.79
- Rating
- 4.6/5
- Reviews
- 1,849
- Age
- 6y ago

L Theanine 400mg | 400 Capsules Max Size | Non-GMO & Gluten Free | by Horbaach
- Price
- $34.14
- Rating
- 4.6/5
- Reviews
- 2,092
- Age
- 6y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 97% of clicks. A locked shelf that new listings rarely crack.
Brands
4 falling
Sellers
13
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
97%
Top 20: 100%
Open market
0%
- Now Foods55%
- Horbäach33%
- THORNE9%
- 365 by Whole Foods Market3%
Demand
L Theanine search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Sep · busiest ÷ quietest = 2.1× · 11 of 12 months tracked
Search terms
Top L Theanine search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- l theanine2K/yr
- l-theanine1K/yr
- theanine430/yr
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 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









