---
title: "Thorne L Theanine — $1.1M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/thorne-l-theanine"
last_updated: "2026-08-10T19:41:41.287Z"
locale: en
meta:
description: "Niche score 51/100 · $1.1M/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $1.1M/yr market. Brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Thorne L Theanine — $1.1M/yr Amazon US Niche (2026) - Flapen"
---
# **thorne l theanine**
**Worth a look**
Shows low returns (0.0%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Market size 79Growth 24Conversion 97Competition 6Returns 100Price range 95Avg price 95Brand share 0Review moat 24Quality gap 42
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****15.1%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$46.22**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$19.05–$84.81**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Great****$1.1M**
$1.1M/yr · 157K searches
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-2.1%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****6,334.71**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****93%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, thorne l theanine is a $1.1M/yr Amazon United States market (157K searches/yr). The top 5 brands hold 100% of demand. Verdict: Worth a look — 51/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **thorne l theanine market data**
- **Units sold / yr**
- **20K–25K**
- avg 3,000–4,000/product
- **Revenue / yr**
- **$924K–$1.2M**
- units × avg price
- **Conversion rate**
- **15.1%**
- **Avg BSR**
- **#189**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **2.2%**
- **Avg brand age**
- **73 months**
- **Avg seller age**
- **152 days**
## **Competition & brand share**
The top 5 products capture 93% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▼falling
**Sellers**
**28**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**93%**
Top 20: 100%
**Open market**
**0%**
- THORNE68% - Momentous19% - Life Extension5% - Pure Encapsulations4% - Sports Research4%
## **Demand & seasonality**
Weekly Amazon search volume, last 98 weeks — -2.1% search growth over the last 90 days.
4K3KBlack Friday '24Holiday '24Spike '25Prime Day '25Black Friday '25Holiday '25Spike '26 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 3.4×
[**Open Trend **](https://flapen.com/research/us/health-household/thorne-l-theanine/trend)
## **Top thorne l theanine search terms**
- **thorne l theanine**33K/yr+17.3%11.9% conv. - **thorne theanine**16K/yr+9.7%19.7% conv. - **momentous magnesium l-threonate**17K/yr-3.7%14.2% conv. - **l theanine thorne**10K/yr+25.9%9.2% conv. - **thorne magnesium l-threonate**12K/yr-1.1%4.7% conv. - **thorne l-theanine**9K/yr+16.9%9.6% conv. - **momentous magnesium**9K/yr-20.7%7.5% conv. - **thorne magnesium threonate**8K/yr-9.7%5.2% conv. - **l-theanine thorne**5K/yr+32.1%9.6% conv. - **magnesium l-threonate thorne**6K/yr+5.1%5.9% conv. [**All search terms **](https://flapen.com/research/us/health-household/thorne-l-theanine/search-terms)
## **Top thorne l theanine products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%$164K30%$329K45%$493K60%$658K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 7 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**THORNE - Theanine - 200 mg of L-Theanine - Supports a Healthy Stress Response Relaxation Focus Memory & Positive Mood - Increases Brain Alpha-Wave Production* - Third-Party Certified - 90 Capsules**THORNE**$66.04**4.7★831 rev](https://www.amazon.com/dp/B0797BLW59) [2**Momentous Magtein Magnesium L-Threonate - Brain & Rest Support Supplement - Boosts Cognitive Function & Sleep Quality - NSF Certified for Sport -145 mg - 30 Servings**Momentous**$48.13**4.6★732 rev](https://www.amazon.com/dp/B09WWK4R2C) [3**THORNE - Deep Sleep Complex - All-Natural Sleep Supplement - Supports Sleep Quality & All Phases of the Sleep Cycle* - with L-Theanine Chamomile & Maizinol - Third-Party Certified - 60 Capsules**THORNE**$51.14**3.8★87 rev](https://www.amazon.com/dp/B0FVJWVPNK) [4**Life Extension Neuro-Mag Magnesium L-Threonate Memory Health Quick Thinking Cognitive Health Support Vegetarian Non-GMO 90 Vegetarian Capsules (144 mg from 2000 mg Magtein magnesium L-threonate**Life Extension**$29.03**4.6★24,278 rev](https://www.amazon.com/dp/B006P536E6) [5**Pure Encapsulations CogniMag 120s - Magnesium-L-Threonate Supplement - Supports Brain Health & Memory* - Includes Magtein & Polyphenol Blend - 120 Capsules**Pure Encapsulations**$84.81**4.6★522 rev](https://www.amazon.com/dp/B009GCQMHI)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**THORNE - Deep Sleep Complex - All-Natural Sleep Supplement - Supports Sleep Quality & All Phases of the Sleep Cycle* - with L-Theanine Chamomile & Maizinol - Third-Party Certified - 60 Capsules**THORNE**$51.14**87 rev7mo ago](https://www.amazon.com/dp/B0FVJWVPNK) [**THORNE - Magnesium Glycinate - Supports Restful Sleep Muscle Relaxation Heart Health & Metabolism* - Chelated Magnesium Capsules - Third-Party Certified - Gluten Dairy & Soy-Free - 90 Servings**THORNE**$25.37**2,660 rev1y ago](https://www.amazon.com/dp/B0F5XYHRPV) [**Momentous Magtein Magnesium L-Threonate - Brain & Rest Support Supplement - Boosts Cognitive Function & Sleep Quality - NSF Certified for Sport -145 mg - 30 Servings**Momentous**$48.13**732 rev4y ago](https://www.amazon.com/dp/B09WWK4R2C) [**Life Extension Neuro-Mag Magnesium L-Threonate Memory Health Quick Thinking Cognitive Health Support Vegetarian Non-GMO 90 Vegetarian Capsules (144 mg from 2000 mg Magtein magnesium L-threonate**Life Extension**$29.03**24,278 rev9y ago](https://www.amazon.com/dp/B006P536E6) [**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**Sports Research**$19.05**15,233 rev11y ago](https://www.amazon.com/dp/B00TXY32FY)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**THORNE - Deep Sleep Complex - All-Natural Sleep Supplement - Supports Sleep Quality & All Phases of the Sleep Cycle* - with L-Theanine Chamomile & Maizinol - Third-Party Certified - 60 Capsules**THORNE**$51.14**3.8★**▲ 71%**](https://www.amazon.com/dp/B0FVJWVPNK) [**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**Sports Research**$19.05**4.5★**— 9%**](https://www.amazon.com/dp/B00TXY32FY) [**THORNE - Theanine - 200 mg of L-Theanine - Supports a Healthy Stress Response Relaxation Focus Memory & Positive Mood - Increases Brain Alpha-Wave Production* - Third-Party Certified - 90 Capsules**THORNE**$66.04**4.7★**— 4%**](https://www.amazon.com/dp/B0797BLW59) [**Pure Encapsulations CogniMag 120s - Magnesium-L-Threonate Supplement - Supports Brain Health & Memory* - Includes Magtein & Polyphenol Blend - 120 Capsules**Pure Encapsulations**$84.81**4.6★**▼ 11%**](https://www.amazon.com/dp/B009GCQMHI) [**Momentous Magtein Magnesium L-Threonate - Brain & Rest Support Supplement - Boosts Cognitive Function & Sleep Quality - NSF Certified for Sport -145 mg - 30 Servings**Momentous**$48.13**4.6★**▼ 14%**](https://www.amazon.com/dp/B09WWK4R2C)
**~~View all trending →~~**
## **What buyers say about thorne l theanine**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Sleep Quality**27%
*“Helps me sleep”*
**Quality-Overall**19%
*“the quality has been very consistent”*
**Magnesium**9%
*“Best magnesium”*
**Vitamin**5%
*“Love these vitamins”*
**Efficiency**4%
*“Do the work”*
**Value For Money**3%
*“price was fair”*
**Stress/Anxiety**2%
*“Less anxiety”*
**Advertised Vs Actual Product**2%
*“Accurate description”*
**Soothing Effect**2%
*“they give this calm”*
**Focus Enhancement**2%
*“Improves focus and memory”*
### **What buyers complain about **
**Sleep Quality**13%
*“Didnt really help with my sleep”*
**Functionality-Overall**7%
*“it didnt help”*
**Value For Money**7%
*“Price gouging”*
**Quality-Overall**6%
*“Poor Quality Control”*
**Magnesium**5%
*“Ive had much better results with different magnesium glycinate brands”*
**Size-Overall**5%
*“These are huge”*
**Side Effects**5%
*“possible side effect”*
**Acid Regulator/Stomach Ache Relief**4%
*“Stomach pain”*
**Ease Of Chewing/Swallowing**3%
*“so sometimes I have a little bit of a problem swallowing them”*
**Dosage**3%
*“No one should ever take this high of a dose of this”*
### **Top return reasons **
**Functionality-Overall**21%
**Sleep Quality**18%
**Advertised Vs Actual Product**14%
**Value For Money**11%
**Ingredients-Overall**11%
**Magnesium**7%
**Ease Of Chewing/Swallowing**5%
**Heart Health**4%
**Fever Relief**4%
**Acid Regulator/Stomach Ache Relief**4%
## **Common questions**
- **Is thorne l theanine profitable to sell on Amazon United States?**
- The niche generates $1.1M/yr across 7 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -2.1%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the thorne l theanine niche?**
- 5 brands and 28 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in thorne l theanine?**
- Top complaints mined from reviews: Sleep Quality, Functionality-Overall, Value For Money. The return rate is 0.0%.
- **When does demand for thorne l theanine peak?**
- Demand is steady year-round — the busiest month runs 3.4× the quietest.
- **What does it cost to enter the thorne l theanine niche?**
- Listings span $19.05–$84.81; the average listing price is $46.22 (sweet spot $15–$100). The average incumbent carries 6,335 reviews — the moat a new listing must climb.
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