L Theanine
PassL Theanine scores 66 out of 100, a Pass. Shoppers spend an estimated $17.6M a year here, search demand grew +3.8% this quarter, and an estimated 0.0% of orders come back.
- Flapen Score
- 66 / 100Top 3% of 14,768 Health & Household niches · +17 vs the category median of 4966
- Market size
- $17.6M/yr5.2M searches / yr
- 90-day growth
- +3.8%search demand this quarter
- Competition
- 56%top-5 click share · 17 brands · 571 sellers
Flapen Score
L Theanine against its category
The dotted line is the Health & Household average. Past it, L Theanine is stronger. Inside it, weaker.
Market
The L Theanine market on Amazon at a glance
Shoppers on Amazon United States searched for L Theanine 5.2M times last year and spent an estimated $17.6M. The top 5 brands take 64% of clicks. Flapen scores it 66 out of 100, a Pass.
01 · Demand
An estimated 14.4% of those searches ended in a purchase.
Shoppers searched for this 5.2M times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 14.4% of those searches ended in a purchase. Searches in the last 90 days moved +3.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated $17.6M a year.
- Searches, last 12 months
- 5.2M
- Growth, 90 days vs prior 90
- +3.8%
- Conversion, latest week
- 14.4%
- Market size, estimated
- $17.6Ma year
- Peak month
- April1.4× the quietest month
- Top search term
- l theanine2.1M searches a year
02 · Price
A sale here is worth $23.66.
Listings sell for $23.66 on average, from $9.86 to $66.04. Amazon reports units sold in ranges. This niche sold 600K to 800K a year. The average listing sells 25,000 to 30,000 of them. At $23.66 that is $592K to $710K a year per listing.
- Average price
- $23.66inside the $15 to $100 sweet spot
- Price range
- $9.86–$66.04
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 600K–800K
- Units per listing a year
- 25,000–30,000
- Revenue per listing a year
- $592K–$710K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
86% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #134 within Amino Acids. It carries 5,311 reviews at 4.65 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 86%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #134in Amino Acids
- Average rating
- 4.65 starsAmazon United States average 4.42 stars
- Average reviews
- 5,311per listing
- Listings tracked
- 22
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 44 months on average, so the names here are settling in.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 44 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 25, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Nutricost L-Theanine 200mg 120 Capsules Double Strength Gluten Free
- Price
- $11.91
- Rating
- 4.6/5
- Reviews
- 9,940
- Age
- 10y ago

Natures Trove L-Theanine 200mg 120 Vegetarian Capsules
- Price
- $9.86
- Rating
- 4.6/5
- Reviews
- 27,416
- Age
- 10y ago

Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil Non-GMO & Gluten Free - 200mg 60 Count
- Price
- $19.05
- Rating
- 4.5/5
- Reviews
- 15,233
- Age
- 11y ago

Pure Encapsulations L-Theanine - Amino Acid Supplement to Support Relaxation Stress & Nervous System* - 60 Capsules
- Price
- $62.42
- Rating
- 4.7/5
- Reviews
- 915
- Age
- 18y ago

Integrative Therapeutics L-Theanine - Amino Acid Supplement for Stress & Relaxation Support* - Vegan Gluten-Free & Dairy-Free - Third-Party Tested - 60 Capsules (30 Servings)
- Price
- $21.06
- Rating
- 4.6/5
- Reviews
- 1,618
- Age
- 18y ago
Trending
estimated 90-day click momentum
Micro Ingredients L-Theanine 400mg 400 Softgels | Highly Bioavailable with Coconut Oil | Extra Strength Theanine Amino Acid | Calm & Relaxation Support + Focus Supplement | Non-GMO Gluten Free
- Price
- $24.58
- Rating
- 4.7/5
- Reviews
- 261
- Age
- 1y ago

MaryRuths L Theanine 200mg Liquid Drops | Mood Support for Adults & Kids | Focus Supplement | Natural Sleep Support | Vegan | Non-GMO | Gluten Free | 30 Servings
- Price
- $19.96
- Rating
- 4.7/5
- Reviews
- 1,313
- Age
- 4y ago

Nutricost L-Theanine 200mg 120 Capsules Double Strength Gluten Free
- Price
- $11.91
- Rating
- 4.6/5
- Reviews
- 9,940
- Age
- 10y ago

Pure Encapsulations L-Theanine - Amino Acid Supplement to Support Relaxation Stress & Nervous System* - 60 Capsules
- Price
- $62.42
- Rating
- 4.7/5
- Reviews
- 915
- Age
- 18y ago

Life Extension L-Theanine Amino Acid theanine Calm Relaxation Mood Gluten-Free Non-GMO Vegetarian 200 mg 60 Capsules
- Price
- $16.62
- Rating
- 4.6/5
- Reviews
- 1,007
- Age
- 12y ago
Newest
by launch date
Micro Ingredients L-Theanine 400mg 400 Softgels | Highly Bioavailable with Coconut Oil | Extra Strength Theanine Amino Acid | Calm & Relaxation Support + Focus Supplement | Non-GMO Gluten Free
- Price
- $24.58
- Rating
- 4.7/5
- Reviews
- 261
- Age
- 1y ago

Extra Strength L-Theanine Supplement 400mg 400 Capsules (200mg Per Cap)
- Price
- $16.13
- Rating
- 4.7/5
- Reviews
- 436
- Age
- 1y ago

L-Theanine 200mg with Magnesium Glycinate 400 Coconut MCT Oil Softgels | 2-in-1 Amino Acid & Mineral Complex | Gentle Care All Day & Night
- Price
- $24.05
- Rating
- 4.6/5
- Reviews
- 795
- Age
- 1y ago

L Theanine 400 mg | L-Theanine Stress Relief | Extra Strength Supplement | Lab Tested | Relaxation Sleep & Calm Support | For Men & Women | Plant Based Non-GMO & Gluten-Free | 120 Vegan Capsules
- Price
- $18.65
- Rating
- 4.6/5
- Reviews
- 2,155
- Age
- 3y ago

BulkSupplements.com L-Theanine Capsules - L-Theanine Supplement L-Theanine 200mg Theanine Pills - Amino Amino Supplement Gluten Free - 1 Theanine Capsule per Serving 365 Capsules
- Price
- $17.17
- Rating
- 4.6/5
- Reviews
- 941
- Age
- 3y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 56% of clicks. Leaders hold, but buyers still shop past them.
Brands
17 flat
Sellers
571
Est. top-5 brand share
64%
Top 20: 100%
Est. top-5 click share
56%
Top 20: 98%
Open market
30%
- Nutricost26%
- Nature's Trove14%
- Sports Research9%
- NOW Foods8%
- Pure Encapsulations6%
- Integrative Therapeutics6%
Demand
L Theanine search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.4×
Search terms
Top L Theanine search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- l theanine2.1M/yr
- l-theanine1.1M/yr
- l theanine supplement689K/yr
- ltheanine272K/yr
- l-theanine 200mg183K/yr
- theanine195K/yr
- l theanine 200mg122K/yr
- l-theanine 400mg75K/yr
- l theanine 400mg46K/yr
- theanine supplement56K/yr
Reviews and returns
What reviews say buyers love and hate about L Theanine
We read the reviews and the return reasons for every product selling here.
“I still dont sleep”
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.
17 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 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









