L Theanine Liquid
FailThe top 5 products take 87% of clicks, so L Theanine Liquid is a Fail.
- Flapen Score
- 48 / 100Ranks 7,720 of 14,768 Health & Household niches · −1 vs the category median of 4948
- Market size
- $135K/yr67K searches / yr
- 90-day growth
- -16.4%search demand this quarter
- Competition
- 87%top-5 click share · 7 brands · 518 sellers
Flapen Score
L Theanine Liquid against its category
The dotted line is the Health & Household average. Past it, L Theanine Liquid is stronger. Inside it, weaker.
Market
The L Theanine Liquid market on Amazon at a glance
Shoppers on Amazon United States searched for L Theanine Liquid 67K times last year and spent an estimated $135K. The top 5 brands take 87% of clicks. Demand peaks in Jan. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 10.3% of those searches ended in a purchase.
Shoppers searched for this 67K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 10.3% of those searches ended in a purchase. Searches in the last 90 days moved -16.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $135K a year.
- Searches, last 12 months
- 67K
- Growth, 90 days vs prior 90
- -16.4%
- Conversion, latest week
- 10.3%
- Market size, estimated
- $135Ka year
- Peak month
- January1.8× the quietest month
- Top search term
- l theanine drops31K searches a year
02 · Price
A sale here is worth $19.48.
Listings sell for $19.48 on average, from $10.03 to $36.55. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 500 to 750 of them. At $19.48 that is $10K to $15K a year per listing.
- Average price
- $19.48inside the $15 to $100 sweet spot
- Price range
- $10.03–$36.55
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 5K–6K
- Units per listing a year
- 500–750
- Revenue per listing a year
- $10K–$15K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads.
100% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 17.3% of listings are out of stock. The average listing ranks #1,250 within Sleep Supplements. It carries 601 reviews at 4.39 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 100%
- Out of stock, average day
- 17.3%
- Average rank
- #1,250in Sleep Supplements
- Average rating
- 4.39 starsAmazon United States average 4.42 stars
- Average reviews
- 601per listing
- Listings tracked
- 7
04 · Newcomers
1 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 48 months on average, so the names here are settling in.
- Launched, last 12 months
- 2
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 48 months
Products
Top L Theanine Liquid 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 28, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
MaryRuths L Theanine 200mg Liquid Drops for Adults & Kids 30 Servings
- Price
- $19.99
- Rating
- 4.7/5
- Reviews
- 1,319
- Age
- 4y ago

FWS L Theanine Liquid Drops 200mg 99% Pure Bioactive L-Theanine Organic Natural Vegan Non GMO Helps to Promote Calmness Relaxation Improved Mood Restful Sleep for Adults and Kids
- Price
- $18.97
- Rating
- 4.6/5
- Reviews
- 452
- Age
- 4y ago

L Theanine Liquid Drops Pure L-Theanine 400mg for Adults and Kids Organic High Absorption L Theanine Supplement Natural Focus Supplement Non-GMO | Gluten Free | 30 Servings
- Price
- $13.81
- Rating
- 4.3/5
- Reviews
- 208
- Age
- 1y ago

L Theanine 200mg Liquid Drops - Natural Sleep Support & Focus Supplement for Kids & Adults - Vegan Non-GMO Gluten Free 200mg Pure L-Theanine Drops Liquid Supplements Mood Ltheanine for Kids 2 FL Oz
- Price
- $10.03
- Rating
- 4.5/5
- Reviews
- 51
- Age
- 4mo ago

High Absorption L Theanine Drops - Focus & Relaxation Support - 2 Fl Oz
- Price
- $15.87
- Rating
- 4.3/5
- Reviews
- 490
- Age
- 3y ago
Trending
estimated 90-day click momentum
OASIS FORCE 2 Pack L Theanine Drops L-Theanine Supplement 400mg for Adults & Kids with GABA Magnesium & Ashwagandha Natural Sleep Focus & Relaxation Support Vegan Alcohol-Free Non-GMO 4 FL OZ
- Price
- $36.55
- Rating
- 3.9/5
- Reviews
- 35
- Age
- 7mo ago

L Theanine 200mg Liquid Drops - Natural Sleep Support & Focus Supplement for Kids & Adults - Vegan Non-GMO Gluten Free 200mg Pure L-Theanine Drops Liquid Supplements Mood Ltheanine for Kids 2 FL Oz
- Price
- $10.03
- Rating
- 4.5/5
- Reviews
- 51
- Age
- 4mo ago

MaryRuths L Theanine 200mg Liquid Drops for Adults & Kids 30 Servings
- Price
- $19.99
- Rating
- 4.7/5
- Reviews
- 1,319
- Age
- 4y ago

High Absorption L Theanine Drops - Focus & Relaxation Support - 2 Fl Oz
- Price
- $15.87
- Rating
- 4.3/5
- Reviews
- 490
- Age
- 3y ago

FWS L Theanine Liquid Drops 200mg 99% Pure Bioactive L-Theanine Organic Natural Vegan Non GMO Helps to Promote Calmness Relaxation Improved Mood Restful Sleep for Adults and Kids
- Price
- $18.97
- Rating
- 4.6/5
- Reviews
- 452
- Age
- 4y ago
Newest
by launch date
L Theanine 200mg Liquid Drops - Natural Sleep Support & Focus Supplement for Kids & Adults - Vegan Non-GMO Gluten Free 200mg Pure L-Theanine Drops Liquid Supplements Mood Ltheanine for Kids 2 FL Oz
- Price
- $10.03
- Rating
- 4.5/5
- Reviews
- 51
- Age
- 4mo ago

OASIS FORCE 2 Pack L Theanine Drops L-Theanine Supplement 400mg for Adults & Kids with GABA Magnesium & Ashwagandha Natural Sleep Focus & Relaxation Support Vegan Alcohol-Free Non-GMO 4 FL OZ
- Price
- $36.55
- Rating
- 3.9/5
- Reviews
- 35
- Age
- 7mo ago

L Theanine Liquid Drops Pure L-Theanine 400mg for Adults and Kids Organic High Absorption L Theanine Supplement Natural Focus Supplement Non-GMO | Gluten Free | 30 Servings
- Price
- $13.81
- Rating
- 4.3/5
- Reviews
- 208
- Age
- 1y ago

High Absorption L Theanine Drops - Focus & Relaxation Support - 2 Fl Oz
- Price
- $15.87
- Rating
- 4.3/5
- Reviews
- 490
- Age
- 3y ago

MaryRuths L Theanine 200mg Liquid Drops for Adults & Kids 30 Servings
- Price
- $19.99
- Rating
- 4.7/5
- Reviews
- 1,319
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 87% of clicks. A locked shelf that new listings rarely crack.
Brands
7 flat
Sellers
518
Est. top-5 brand share
87%
Top 20: 100%
Est. top-5 click share
87%
Top 20: 100%
Open market
5%
- MARYRUTH'S41%
- FIREWATERSTAR HEALTH SUPPLEMENTS14%
- JINGYAT12%
- DR. BO10%
- Natures Craft10%
- SBR Nutrition8%
- Open — no brand owns it (1 brand, 5%)
Demand
L Theanine Liquid search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan · busiest ÷ quietest = 1.8×
Search terms
Top L Theanine Liquid search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- l theanine drops31K/yr
- l theanine liquid12K/yr
- l-theanine drops7K/yr
- l-theanine liquid4K/yr
- l-theanine liquid drops4K/yr
- l theanine liquid drops5K/yr
- liquid l theanine4K/yr
Reviews and returns
What reviews say buyers love and hate about L Theanine Liquid
We read the reviews and the return reasons for every product selling here.
“Taste awful”
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.
18 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 Liquid 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









