L Arginine L Citrulline Supplement
Worth a lookShows low returns (0.0%), but soft demand (-14.2% this quarter) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Great$21.03avg listing price — sweet spot $15–$100
Conversion
Great9.6%search→purchase rate — share of searches ending in a sale
Price range
Great$9.83–$38.69cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$544K$544K/yr · 270K searches
Brand share
Okay76%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Competition
Okay65%top-5 click share — leaders hold, buyers still browse
Review moat
Bad7,819.39avg 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
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.No pronounced peak months · busiest ÷ quietest = 1.4×
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 supplement77K/yr
- l-arginine l-citrulline49K/yr
- arginine citrulline supplement35K/yr
- l citrulline l arginine21K/yr
- l arginine l citrulline14K/yr
- arginine citrulline11K/yr
- l arginina y l citrulina para el pene8K/yr
- citrulline arginine8K/yr
- l-arginine and l-citrulline for men5K/yr
- l citrulline and l arginine6K/yr
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.
All 23 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nutricost L-Arginine L-Citrulline Complex 750mg 240 Capsules - Non-GMO
Nutricost$18.764.6★3,463 rev
Horbach L-Arginine L-Citrulline Complex | 3000mg | 250 Capsules
Horbäach$20.244.6★1,217 rev
L-Arginine and L-Citrulline for Men Nitric Oxide Support 30 Servings
HAVASU NUTRITION$23.734.2★55,008 rev
Nutricost L-Arginine L-Citrulline Complex 750mg 120 Capsules - Non-GMO
Nutricost$12.914.6★3,463 rev
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$17.944.5★972 rev
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$34.8868 rev
Oxify L-Arginine L-Citrulline Complex 2000 mg Per Serving | 120 Tablets | Gluten-Free Non-GMO | Supplement Made in USA
Oxify$9.8329 rev
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$17.38108 rev
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$15.92275 rev
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$21.69832 rev
Trending
90-day click momentumOxify L-Arginine L-Citrulline Complex 2000 mg Per Serving | 120 Tablets | Gluten-Free Non-GMO | Supplement Made in USA
Oxify$9.834.6★
Snap Supplements Nitric Oxide Booster for Men & Women 60 Vegan Capsules
Snap Supplements$24.694.3★
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$34.884.4★
GNC L Arginine + L Citrulline 500mg Each Supplement Supports Nitric Oxide Production and Healthy Blood Vessel Tone 120 Servings
GNC$38.144.5★
Horbach L-Arginine L-Citrulline Complex | 3000mg | 250 Capsules
Horbäach$20.244.6★
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
“Reliable quality”
“Great Value”
“Good energy”
“As advertised”
“Lowers blood pressure”
“Effective”
“Love this vitamin”
“No side effects”
“Solid Supplement”
“Helps heart”
What buyers complain about
“Did not perform well”
“Too big”
“Low volume per dose”
“Doesn't work at all for me”
“hard to swallow”
“Not worth the money”
“My blood pressure goes up and down”
“I did not experience a difference while taking this supplement”
“Snap supplements overall are not good for u”
“Got stomach discomfort”
Top return reasons
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.