---
title: "L Arginine L Citrulline Supplement — Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/l-arginine-l-citrulline-supplement"
last_updated: "2026-08-12T18:00:58.884Z"
locale: en
meta:
description: "Amazon product research for l arginine l citrulline supplement: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for l arginine l citrulline supplement: demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "L Arginine L Citrulline Supplement — Amazon US Product Research"
---
# **L Arginine L Citrulline Supplement**
**Worth a look**
Shows low returns (0.0%), but soft demand (-14.2% this quarter) keeps it on the watch list.
Market size 62Growth 18Conversion 85Competition 33Returns 100Price range 81Avg price 90Brand share 49Review moat 23Quality gap 47
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$21.03**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****9.6%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$9.83–$38.69**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$544K**
$544K/yr · 270K searches
**Brand share**
**Okay****76%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****65%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****7,819.39**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-14.2%**
90-day search growth — must beat 0% to launch
## **Is l arginine l citrulline supplement profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, l arginine l citrulline supplement is a $544K/yr Amazon United States market (270K searches/yr). The top 5 brands hold 76% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **l arginine l citrulline supplement 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**
- **$526K–$631K**
- units × avg price
- **Conversion rate**
- **9.6%**
- **Avg BSR**
- **#149**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **74%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **72 months**
- **Avg seller age**
- **155 days**
## **Competition: brands, sellers & click share**
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▲rising
**Sellers**
**45**
**Top-5 brand share**
**76%**
Top 20: 100%
**Top-5 click share**
**65%**
Top 20: 97%
**Open market**
**20%**
- Nutricost28% - HAVASU NUTRITION21% - Horbäach17% - DORADO NUTRITION5% - Micro Ingredients4% - Best Naturals4%
## **l arginine l citrulline supplement demand & seasonality**
Weekly Amazon search volume, last 101 weeks — -14.2% search growth over the last 90 days.
6K4KPrime Day '25 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/health-household/l-arginine-l-citrulline-supplement/trend)
## **Top l arginine l citrulline supplement search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **l arginine l citrulline supplement**77K/yr-9.2%8.0% conv. - **l-arginine l-citrulline**49K/yr-20.2%9.3% conv. - **arginine citrulline supplement**35K/yr-1.4%8.3% conv. - **l citrulline l arginine**21K/yr-16.0%5.6% conv. - **l arginine l citrulline**14K/yr+15.1%6.9% conv. - **arginine citrulline**11K/yr+7.2%7.6% conv. - **l arginina y l citrulina para el pene**8K/yr-37.6%1.8% conv. - **citrulline arginine**8K/yr-24.8%6.9% conv. - **l-arginine and l-citrulline for men**5K/yr+71.4%8.0% conv. - **l citrulline and l arginine**6K/yr-6.4%5.2% conv. [**All search terms **](https://flapen.com/research/us/health-household/l-arginine-l-citrulline-supplement/search-terms)
## **Top l arginine l citrulline supplement 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.
0%10%$54K20%$109K30%$163K40%$218K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutricost L-Arginine L-Citrulline Complex 750mg 240 Capsules - Non-GMO**Nutricost**$18.76**4.6★3,463 rev](https://www.amazon.com/dp/B0897XWNM7) [2**Horbach L-Arginine L-Citrulline Complex | 3000mg | 250 Capsules**Horbäach**$20.24**4.6★1,217 rev](https://www.amazon.com/dp/B0B94TLVZP) [3**L-Arginine and L-Citrulline for Men Nitric Oxide Support 30 Servings**HAVASU NUTRITION**$23.73**4.2★55,008 rev](https://www.amazon.com/dp/B01MS461VC) [4**Nutricost L-Arginine L-Citrulline Complex 750mg 120 Capsules - Non-GMO**Nutricost**$12.91**4.6★3,463 rev](https://www.amazon.com/dp/B0897XG1VQ) [5**L Arginine L Citrulline Supplement 3000mg (240 Capsules) Nitric Oxide Pills for Men - Stamina Endurance Performance for Workouts - NO Supplements for Men - Gluten Free Non-GMO Vegan Capsules**DORADO NUTRITION**$17.94**4.5★972 rev](https://www.amazon.com/dp/B0BRTJ9L64)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**LincNutri Nitric Oxide Supplements for Men Nitric 1550mg L-Arginine HCl Nitric Oxide Booster for Men L-Citrulline ViNitrox & Oxystorm 3-Pathway Complex with BioPerine 90 Capsules**LincNutri**$34.88**68 rev6mo ago](https://www.amazon.com/dp/B0G25W39V9) [**Oxify L-Arginine L-Citrulline Complex 2000 mg Per Serving | 120 Tablets | Gluten-Free Non-GMO | Supplement Made in USA**Oxify**$9.83**29 rev11mo ago](https://www.amazon.com/dp/B0FP4778WM) [**NatureBell Nitric Oxide Supplement for Men & Women Pre-Workout Formula with L-Arginine & L-Citrulline 3 600mg 300 Bisected Tablets (100 Servings) Max Strength Non-GMO Gluten Free***NatureBell**$17.38**108 rev11mo ago](https://www.amazon.com/dp/B0FNTLPT5V) [**L-Arginine 1 600mg Nitric Oxide Supplement for Men with L-Citrulline 240 Bisected Tablets | Nitric Oxide Precursor | Muscle Energy & Heart Support | Non-GMO Gluten Free - 4 Month Supply**Micro Ingredients**$15.92**275 rev1y ago](https://www.amazon.com/dp/B0DWD26MMF) [**Micro Ingredients Nitric Oxide Supplement for Men & Women 3 600mg Per Serving 240 Bisected Tablets | L-Arginine + L-Citrulline Amino Acid Complex | Pre-Workout Caffeine-Free | Non-GMO Gluten Free**Micro Ingredients**$21.69**832 rev1y ago](https://www.amazon.com/dp/B0DK6684NK)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Oxify L-Arginine L-Citrulline Complex 2000 mg Per Serving | 120 Tablets | Gluten-Free Non-GMO | Supplement Made in USA**Oxify**$9.83**4.6★**▲ 126%**](https://www.amazon.com/dp/B0FP4778WM) [**Snap Supplements Nitric Oxide Booster for Men & Women 60 Vegan Capsules**Snap Supplements**$24.69**4.3★**▲ 82%**](https://www.amazon.com/dp/B07GQ4Z1L8) [**LincNutri Nitric Oxide Supplements for Men Nitric 1550mg L-Arginine HCl Nitric Oxide Booster for Men L-Citrulline ViNitrox & Oxystorm 3-Pathway Complex with BioPerine 90 Capsules**LincNutri**$34.88**4.4★**▲ 63%**](https://www.amazon.com/dp/B0G25W39V9) [**GNC L Arginine + L Citrulline 500mg Each Supplement Supports Nitric Oxide Production and Healthy Blood Vessel Tone 120 Servings**GNC**$38.14**4.5★**▲ 52%**](https://www.amazon.com/dp/B084SGDQZR) [**Horbach L-Arginine L-Citrulline Complex | 3000mg | 250 Capsules**Horbäach**$20.24**4.6★**▲ 48%**](https://www.amazon.com/dp/B0B94TLVZP)
**~~View all trending →~~**
## **What reviews say buyers love and hate about l arginine l citrulline supplement**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“Reliable quality”*
**Value For Money**9%
*“Great Value”*
**Energy Level**8%
*“Good energy”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Blood Pressure**8%
*“Lowers blood pressure”*
**Efficiency**5%
*“Effective”*
**Vitamin**4%
*“Love this vitamin”*
**Side Effects**3%
*“No side effects”*
**Nutritional Content**3%
*“Solid Supplement”*
**Heart Health**3%
*“Helps heart”*
### **What buyers complain about **
**Functionality-Overall**14%
*“Did not perform well”*
**Size-Overall**11%
*“Too big”*
**Dosage**9%
*“Low volume per dose”*
**Side Effects**7%
*“Doesn't work at all for me”*
**Ease Of Chewing/Swallowing**4%
*“hard to swallow”*
**Value For Money**4%
*“Not worth the money”*
**Blood Pressure**3%
*“My blood pressure goes up and down”*
**Vitamin**3%
*“I did not experience a difference while taking this supplement”*
**Ingredients-Overall**2%
*“Snap supplements overall are not good for u”*
**Acid Regulator/Stomach Ache Relief**2%
*“Got stomach discomfort”*
### **Top return reasons **
**Magnesium**25%
**Taste-Overall**25%
**Advertised Vs Actual Product**13%
**Quality-Overall**13%
**Side Effects**13%
**Acid Regulator/Stomach Ache Relief**13%
## **Common l arginine l citrulline supplement questions**
- **Is l arginine l citrulline supplement profitable to sell on Amazon United States?**
- The niche generates $544K/yr across 23 tracked products. 2 of 3 products launched in the last 360 days are still selling. 90-day search growth is -14.2%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the l arginine l citrulline supplement niche?**
- 16 brands and 45 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 76% of demand.
- **What do buyers complain about in l arginine l citrulline supplement?**
- Top complaints mined from reviews: Functionality-Overall, Size-Overall, Dosage. The return rate is 0.0%.
- **When does demand for l arginine l citrulline supplement peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the l arginine l citrulline supplement niche?**
- Listings span $9.83–$38.69; the average listing price is $21.03 (sweet spot $15–$100). The average incumbent carries 7,819 reviews — the moat a new listing must climb.
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