---
title: "L Citrulline — $4K/yr Amazon SG Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/sg/health-household-and-personal-care/l-citrulline"
last_updated: "2026-08-06T01:01:41.646Z"
locale: en
meta:
description: "Niche score 42/100 · $4K/yr market · 3K searches/yr · $31.34 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · $4K/yr market · 3K searches/yr · $31.34 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "L Citrulline — $4K/yr Amazon SG Niche (2026) - Flapen"
---
# **l citrulline**
**Skip it**
A small market ($4K/yr) — this niche doesn't clear our bar today.
Market size 1Growth 48Conversion 55Competition 6Returns 100Price range 95Avg price 95Brand share 17Review moat 25Quality gap 55
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$31.34**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$24.20–$49.55**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****4.7%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+18.3%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****4,343.83**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****93%**
top-5 brand share — brand-locked demand
**Competition**
**Bad****93%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$4K**
$4K/yr · 3K searches
According to Flapen's Amazon Singapore niche tracking, l citrulline is a $4K/yr Amazon Singapore market (3K searches/yr). The top 5 brands hold 93% of demand. Verdict: Skip it — 42/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **l citrulline market data**
- **Units sold / yr**
- **100–250**
- avg 0–100/product
- **Revenue / yr**
- **$3K–$8K**
- units × avg price
- **Conversion rate**
- **4.7%**
- **Avg BSR**
- **#135**
- **Page quality**
- **0%**
- **Prime**
- **67%**
- **Sponsored**
- **17%**
- **Out of stock**
- **10.1%**
- **Avg brand age**
- **89 months**
- **Avg seller age**
- **0 days**
## **Competition & brand share**
The top 5 products capture 93% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **▼falling
**Sellers**
**4**
**Top-5 brand share**
**93%**
Top 20: 100%
**Top-5 click share**
**93%**
Top 20: 100%
**Open market**
**0%**
- Horbäach38% - Nutricost23% - BulkSupplements13% - Now Foods9% - Doctor's Best9% - Snap Supplements7% - Open — no brand owns it (0%)
## **Demand**
Weekly Amazon search volume, last 43 weeks — +18.3% search growth over the last 90 days.
12575Spike '25Black Friday '25Spike '26Prime Day '26Sep '25Nov '25Jan '26Feb '26Apr '26May '26
[**Open Trend **](https://flapen.com/research/sg/health-household-and-personal-care/l-citrulline/trend)
## **Top l citrulline search terms**
- **l citrulline**1K/yr+7.7%1.6% conv. - **l-citrulline**929/yr+28.6%2.3% conv. - **citrulline**805/yr+22.6%2.6% conv. [**All search terms **](https://flapen.com/research/sg/health-household-and-personal-care/l-citrulline/search-terms)
## **Top l citrulline 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%10%$43520%$87030%$1K40%$2K1001K10K100K 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**L Citrulline 2400 mg per Serving | 180 Capsules | Maximum Strength Free Form Amino Acid | Non-GMO Gluten Free L-Citrulline Supplement | by Horbaach**Horbäach**$25.36**4.5★1,431 rev](https://www.amazon.sg/dp/B083JKVXLD) [2**Nutricost L-Citrulline 2500mg Per Serving 60 Servings 1250mg Per Tablet 120 Tabs - Non-GMO and Gluten Free Supplement**Nutricost**$24.20**4.5★1,055 rev](https://www.amazon.sg/dp/B09WCL8N52) [3**BulkSupplements.com L-Citrulline Powder - Citrulline Supplement Citrulline Pharmaceutical Grade Citrulline Powder - Citrulline 3000mg 3g per Servings 333 Servings 1kg (2.2 lbs)**BulkSupplements**$49.55**4.6★4,193 rev](https://www.amazon.sg/dp/B00NBCVVWA) [4**NOW Supplements L-Citrulline Pure Powder Supports Protein Metabolism* 4-Ounce**Now Foods**$25.44**4.2★318 rev](https://www.amazon.sg/dp/B001B4P3UQ) [5**Doctors Best L-Citrulline Non-GMO Vegan Gluten Free Soy Free 200g**Doctor's Best**$26.38**4.4★806 rev](https://www.amazon.sg/dp/B01E19M0IU)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nutricost L-Citrulline 2500mg Per Serving 60 Servings 1250mg Per Tablet 120 Tabs - Non-GMO and Gluten Free Supplement**Nutricost**$24.20**1,055 rev4y ago](https://www.amazon.sg/dp/B09WCL8N52) [**L Citrulline 2400 mg per Serving | 180 Capsules | Maximum Strength Free Form Amino Acid | Non-GMO Gluten Free L-Citrulline Supplement | by Horbaach**Horbäach**$25.36**1,431 rev6y ago](https://www.amazon.sg/dp/B083JKVXLD) [**Nitric Oxide Booster by Snap Supplements - Pre Workout Muscle Builder - L Arginine L Citrulline 1500mg Formula Tribulus Extract & Panax Ginseng Strength & Endurance 60 Capsules**Snap Supplements**$37.10**18,260 rev7y ago](https://www.amazon.sg/dp/B07GQ4Z1L8) [**Doctors Best L-Citrulline Non-GMO Vegan Gluten Free Soy Free 200g**Doctor's Best**$26.38**806 rev10y ago](https://www.amazon.sg/dp/B01E19M0IU) [**BulkSupplements.com L-Citrulline Powder - Citrulline Supplement Citrulline Pharmaceutical Grade Citrulline Powder - Citrulline 3000mg 3g per Servings 333 Servings 1kg (2.2 lbs)**BulkSupplements**$49.55**4,193 rev11y ago](https://www.amazon.sg/dp/B00NBCVVWA)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nutricost L-Citrulline 2500mg Per Serving 60 Servings 1250mg Per Tablet 120 Tabs - Non-GMO and Gluten Free Supplement**Nutricost**$24.20**4.5★**▲ 118%**](https://www.amazon.sg/dp/B09WCL8N52) [**BulkSupplements.com L-Citrulline Powder - Citrulline Supplement Citrulline Pharmaceutical Grade Citrulline Powder - Citrulline 3000mg 3g per Servings 333 Servings 1kg (2.2 lbs)**BulkSupplements**$49.55**4.6★**▲ 55%**](https://www.amazon.sg/dp/B00NBCVVWA) [**NOW Supplements L-Citrulline Pure Powder Supports Protein Metabolism* 4-Ounce**Now Foods**$25.44**4.2★**— 9%**](https://www.amazon.sg/dp/B001B4P3UQ) [**Doctors Best L-Citrulline Non-GMO Vegan Gluten Free Soy Free 200g**Doctor's Best**$26.38**4.4★**▼ 14%**](https://www.amazon.sg/dp/B01E19M0IU) [**L Citrulline 2400 mg per Serving | 180 Capsules | Maximum Strength Free Form Amino Acid | Non-GMO Gluten Free L-Citrulline Supplement | by Horbaach**Horbäach**$25.36**4.5★**▼ 24%**](https://www.amazon.sg/dp/B083JKVXLD)
**~~View all trending →~~**
## **Common questions**
- **Is l citrulline profitable to sell on Amazon Singapore?**
- The niche generates $4K/yr across 6 tracked products. 90-day search growth is +18.3%. Flapen's verdict: Skip it (42/100).
- **How competitive is the l citrulline niche?**
- 6 brands and 4 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 93% of demand.
- **What does it cost to enter the l citrulline niche?**
- Listings span $24.20–$49.55; the average listing price is $31.34 (sweet spot $15–$100). The average incumbent carries 4,344 reviews — the moat a new listing must climb.
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