L Theanine 100 Mg
Worth a lookShows low returns (0.0%), but soft demand (-3.2% this quarter) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible13.1%search→purchase rate — share of searches ending in a sale
Price range
Great$9.86–$62.51cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$19.08avg listing price — sweet spot $15–$100
Market size
Good$492K$492K/yr · 197K searches
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Competition
Okay65%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad4,661.12avg incumbent reviews — the moat a new listing must climb
Growth
Bad-3.2%90-day search growth — must beat 0% to launch
Is l theanine 100 mg profitable on Amazon?
According to Flapen's Amazon United States niche tracking, l theanine 100 mg is a $492K/yr Amazon United States market (197K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Jun–Jul. Verdict: Worth a look — 53/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
l theanine 100 mg market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 25K–30K
- avg 1,250–1,500/product
- Revenue / yr
- $477K–$572K
- units × avg price
- Conversion rate
- 13.1%
- Avg BSR
- #824
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 65%
- Out of stock
- 0.0%
- Avg brand age
- 68 months
- Avg seller age
- 161 days
Competition: brands, sellers & click share
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.Brands
13 rising
Sellers
541
Top-5 brand share
82%
Top 20: 100%
Top-5 click share
65%
Top 20: 100%
Open market
15%
- NOW Foods61%
- Integrative Therapeutics6%
- Jarrow Formulas6%
- Nutricost5%
- Life Extension4%
- 365 by Whole Foods Market3%
- Open — no brand owns it (7 brands, 15%)
l theanine 100 mg demand & seasonality
Weekly Amazon search volume, last 98 weeks — -3.2% search growth over the last 90 days.Peak months: Jun, Jul · busiest ÷ quietest = 3.0×
Top l theanine 100 mg search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- l theanine 100 mg45K/yr
- l-theanine 100 mg41K/yr
- now l theanine23K/yr
- l theanine 100mg12K/yr
- l theanine now12K/yr
- now foods l-theanine7K/yr
- l-theanine 100mg8K/yr
- now l-theanine 200 mg4K/yr
- now l-theanine7K/yr
- l-theanine now5K/yr
Top l theanine 100 mg products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 17 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
NOW Foods Supplements L-Theanine 100 mg with Decaf Green Tea Stress Management* 90 Veg Capsules
NOW Foods$12.424.6★2,802 rev
NOW Foods L-Theanine Double Strength 200 mg Per Cap - 180 Veg Capsules - Enhanced with 100mg Inositol - Vegetarian Non-GMO - Ltheanine 200mg Supplement
NOW Foods$29.974.8★854 rev
NOW Foods Supplements L-Theanine 200 mg with Inositol Stress Management* 60 Veg Capsules
NOW Foods$14.434.7★7,357 rev
NOW Foods Supplements L-Theanine 200 mg with Inositol Stress Management* 120 Veg Capsules
NOW Foods$21.294.7★7,357 rev
Integrative Therapeutics L-Theanine - Amino Acid Supplement for Stress & Relaxation Support* - Vegan Gluten-Free & Dairy-Free - Third-Party Tested - 60 Capsules (30 Servings)
Integrative Therapeutics$21.084.6★1,626 rev
Newest
by launch dateNOW Foods L-Theanine Double Strength 200 mg Per Cap - 180 Veg Capsules - Enhanced with 100mg Inositol - Vegetarian Non-GMO - Ltheanine 200mg Supplement
NOW Foods$29.97854 rev
SOS L-Theanine Brain Support Focus Supplement 100mg 120 Count
Supplement Outlet Store$12.61238 rev
Whole Foods Market L-Theanine 100 MCG 60 CT
365 by Whole Foods Market$13.26209 rev
PureFormulas L Theanine Supplement 100 mg L-Theanine Supports Stress Levels Relaxed State Mood Sleep Dairy Free Soy Free Non-GMO 60 Vegetarian Capsules
PureFormulas$15.7996 rev
Healthy Origins L-Theanine AlphaWave 100 mg 180 Veggie Caps
Healthy Origins$19.85250 rev
Trending
90-day click momentumNOW Foods Supplements L-Theanine 200 mg with Inositol Stress Management* 120 Veg Capsules
NOW Foods$21.294.7★
Pure Encapsulations L-Theanine - Amino Acid Supplement to Support Relaxation Stress & Nervous System* - 60 Capsules
Pure Encapsulations$62.514.7★
Integrative Therapeutics L-Theanine - Amino Acid Supplement for Stress & Relaxation Support* - Vegan Gluten-Free & Dairy-Free - Third-Party Tested - 60 Capsules (30 Servings)
Integrative Therapeutics$21.084.6★
Healthy Origins L-Theanine AlphaWave 100 mg 180 Veggie Caps
Healthy Origins$19.854.7★
Nutricost L-Theanine 200mg 120 Capsules Double Strength Gluten Free
Nutricost$11.914.6★
What reviews say buyers love and hate about l theanine 100 mg
What buyers praise and complain about, mined from review topics.What buyers love
“Helps Me Sleep”
“Good quality and trusted brand”
“Improves focus and memory”
“Helps with my anxiety”
“It relaxes me”
“Effective”
“Best value”
“Great vitamin supplement”
“As described”
“No drowsiness, no weird side effects—just a smooth, steady feeling”
What buyers complain about
“No Results”
“Sleep aid not worth buying”
“I gave me anxiety”
“No one should ever take this high of a dose of this”
“Could be just the placebo affect”
“It is more expensive”
“A bit disappointing because I thought Id found a reasonable source of suntheanine”
“there was no taste with the capsules”
“Had a bad reaction to this product”
“I did not feel any different in focus and relaxation”
Top return reasons
Common l theanine 100 mg questions
- Is l theanine 100 mg profitable to sell on Amazon United States?
- The niche generates $492K/yr across 17 tracked products. 90-day search growth is -3.2%. Flapen's verdict: Worth a look (53/100).
- How competitive is the l theanine 100 mg niche?
- 13 brands and 541 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 82% of demand.
- What do buyers complain about in l theanine 100 mg?
- Top complaints mined from reviews: Functionality-Overall, Sleep Quality, Stress/Anxiety. The return rate is 0.0%.
- When does demand for l theanine 100 mg peak?
- Demand peaks in Jun–Jul; the busiest month runs 3.0× the quietest.
- What does it cost to enter the l theanine 100 mg niche?
- Listings span $9.86–$62.51; the average listing price is $19.08 (sweet spot $15–$100). The average incumbent carries 4,661 reviews — the moat a new listing must climb.