---
title: "L Theanine — $9K/yr Amazon SG Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/sg/health-household-and-personal-care/l-theanine"
last_updated: "2026-08-08T05:22:06.268Z"
locale: en
meta:
description: "Niche score 36/100 · $9K/yr market · 4K searches/yr · $35.25 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 36/100 · $9K/yr market · 4K searches/yr · $35.25 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "L Theanine — $9K/yr Amazon SG Niche (2026) - Flapen"
---
# **l theanine**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 2Growth 27Conversion 66Competition 3Returns 100Price range 95Avg price 95Brand share 0Review moat 55Quality gap 19
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$35.25**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$17.79–$88.23**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****5.9%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****1,292**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+1.9%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****97%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$9K**
$9K/yr · 4K searches
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon Singapore niche tracking, l theanine is a $9K/yr Amazon Singapore market (4K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 36/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **l theanine market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$18K–$26K**
- units × avg price
- **Conversion rate**
- **5.9%**
- **Avg BSR**
- **#270**
- **Page quality**
- **0%**
- **Prime**
- **83%**
- **Sponsored**
- **17%**
- **Out of stock**
- **9.0%**
- **Avg brand age**
- **75 months**
- **Avg seller age**
- **0 days**
## **Competition & brand share**
The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▼falling
**Sellers**
**13**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**97%**
Top 20: 100%
**Open market**
**0%**
- Now Foods55% - Horbäach33% - THORNE9% - 365 by Whole Foods Market3%
## **Demand**
Weekly Amazon search volume, last 46 weeks — +1.9% search growth over the last 90 days.
150100Black Friday '25Spike '26Sep '25Oct '25Dec '25Feb '26Mar '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/sg/health-household-and-personal-care/l-theanine/trend)
## **Top l theanine search terms**
- **l theanine**2K/yr+7.0%8.7% conv. - **l-theanine**1K/yr+0.9%5.9% conv. - **theanine**430/yr-15.7%4.4% conv. [**All search terms **](https://flapen.com/research/sg/health-household-and-personal-care/l-theanine/search-terms)
## **Top 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%$1K30%$3K45%$4K60%$5K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 6 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Now Foods L-Theanine Double Strength 200 mg 60 Count**Now Foods**$20.17**4.6★2,410 rev](https://www.amazon.sg/dp/B000H7P9M0) [2**L Theanine 200mg | 400 Capsules | Value Size | Non-GMO Gluten Free Supplement | by Horbaach**Horbäach**$31.19**4.7★636 rev](https://www.amazon.sg/dp/B09K4CCXBP) [3**Thorne Theanine - 200mg of L-Theanine - Support a Healthy Stress Response Relaxation and Focus - Increases Brain Alpha-Wave Production - 90 Capsules**THORNE**$88.23**4.7★763 rev](https://www.amazon.sg/dp/B0797BLW59) [4**L Theanine 400mg | 120 Capsules | Non-GMO & Gluten Free | by Horbaach**Horbäach**$17.79**4.6★1,849 rev](https://www.amazon.sg/dp/B07Z9K1LM2) [5**L Theanine 400mg | 400 Capsules Max Size | Non-GMO & Gluten Free | by Horbaach**Horbäach**$34.14**4.6★2,092 rev](https://www.amazon.sg/dp/B07VR7465V)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**365 by Whole Foods Market L-Theanine 100mg Vegan 60 Count**365 by Whole Foods Market**$19.96**2 rev10mo ago](https://www.amazon.sg/dp/B074MGT36V) [**Thorne Theanine - 200mg of L-Theanine - Support a Healthy Stress Response Relaxation and Focus - Increases Brain Alpha-Wave Production - 90 Capsules**THORNE**$88.23**763 rev3y ago](https://www.amazon.sg/dp/B0797BLW59) [**L Theanine 200mg | 400 Capsules | Value Size | Non-GMO Gluten Free Supplement | by Horbaach**Horbäach**$31.19**636 rev4y ago](https://www.amazon.sg/dp/B09K4CCXBP) [**L Theanine 400mg | 120 Capsules | Non-GMO & Gluten Free | by Horbaach**Horbäach**$17.79**1,849 rev6y ago](https://www.amazon.sg/dp/B07Z9K1LM2) [**L Theanine 400mg | 400 Capsules Max Size | Non-GMO & Gluten Free | by Horbaach**Horbäach**$34.14**2,092 rev6y ago](https://www.amazon.sg/dp/B07VR7465V)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**L Theanine 200mg | 400 Capsules | Value Size | Non-GMO Gluten Free Supplement | by Horbaach**Horbäach**$31.19**4.7★**▲ 17%**](https://www.amazon.sg/dp/B09K4CCXBP) [**L Theanine 400mg | 400 Capsules Max Size | Non-GMO & Gluten Free | by Horbaach**Horbäach**$34.14**4.6★**— 3%**](https://www.amazon.sg/dp/B07VR7465V) [**365 by Whole Foods Market L-Theanine 100mg Vegan 60 Count**365 by Whole Foods Market**$19.96**5.0★**— 0%**](https://www.amazon.sg/dp/B074MGT36V) [**Now Foods L-Theanine Double Strength 200 mg 60 Count**Now Foods**$20.17**4.6★**— 1%**](https://www.amazon.sg/dp/B000H7P9M0) [**Thorne Theanine - 200mg of L-Theanine - Support a Healthy Stress Response Relaxation and Focus - Increases Brain Alpha-Wave Production - 90 Capsules**THORNE**$88.23**4.7★**— 4%**](https://www.amazon.sg/dp/B0797BLW59)
**~~View all trending →~~**
## **Common questions**
- **Is l theanine profitable to sell on Amazon Singapore?**
- The niche generates $9K/yr across 6 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +1.9%. Flapen's verdict: Skip it (36/100).
- **How competitive is the l theanine niche?**
- 4 brands and 13 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.
- **What does it cost to enter the l theanine niche?**
- Listings span $17.79–$88.23; the average listing price is $35.25 (sweet spot $15–$100). The average incumbent carries 1,292 reviews — the moat a new listing must climb.
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