Is l-arginine plus profitable to sell on Amazon United States?

The niche generates $31K/yr across 8 tracked products. 90-day search growth is +11.0%. Flapen's verdict: Skip it (40/100).

How competitive is the l-arginine plus niche?

5 brands and 6 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in l-arginine plus?

Top complaints mined from reviews: Functionality-Overall, Measurement/Reading Accuracy, Ingredients-Overall. The return rate is 0.0%.

When does demand for l-arginine plus peak?

Demand peaks in Sep; the busiest month runs 1.5× the quietest.

What does it cost to enter the l-arginine plus niche?

Listings span $26.44–$190.24; the average listing price is $69.73 (sweet spot $15–$100). The average incumbent carries 1,384 reviews — the moat a new listing must climb.

L-arginine Plus

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$69.73

avg listing price — sweet spot $15–$100

Conversion

Great8.1%

search→purchase rate — share of searches ending in a sale

Review moat

Good1,383.63

avg incumbent reviews — the moat a new listing must climb

Price range

Okay$26.44–$190.24

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Okay+11.0%

90-day search growth — must beat 0% to launch

Competition

Bad84%

top-5 click share — a locked-up shelf

Market size

Bad$31K

$31K/yr · 5K searches

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals High Price Out of Stock

Is l-arginine plus profitable on Amazon?

According to Flapen's Amazon United States niche tracking, l-arginine plus is a $31K/yr Amazon United States market (5K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Sep. Verdict: Skip it — 40/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

l-arginine plus market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 500–750; avg 0–100/product
Revenue / yr: $35K–$52K; units × avg price
Conversion rate: 8.1%
Avg BSR: #724
Page quality: 0%
Prime: 75%
Sponsored: 100%
Out of stock: 26.9%
Avg brand age: 103 months
Avg seller age: 178 days

Competition: brands, sellers & click share

The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

84%

Top 20: 100%

Open market

Klerpath43%
DR. EMIL NUTRITION24%
THORNE15%
L-ARGININE PRO13%
Metagenics6%

l-arginine plus demand & seasonality

Weekly Amazon search volume, last 99 weeks — +11.0% search growth over the last 90 days.

Peak months: Sep · busiest ÷ quietest = 1.5×

Open Trend

Top l-arginine plus search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

l arginine plus2K/yr +31.6%4.3% conv.
l-arginine plus2K/yr -12.1%3.8% conv.
arginine plus1K/yr +27.1%10.8% conv.

All search terms

Top l-arginine plus 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 8 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

L-Arginine Plus Raspberry 6-Pack - #1 Natural Blood Pressure Supplement Better Cholesterol More Energy - Heart Health Supplement 13.4 oz

Klerpath$190.244.6★69 rev

Dr. Emils Arginine Plus - L Arginine & L Citrulline Malate - High Dose 2500 MG Nitric Oxide Booster for Circulation Endurance & Workout Pump - Non-GMO

DR. EMIL NUTRITION$26.444.3★6,342 rev

THORNE - L-Arginine Plus - Added Antioxidant Support - Supports Heart Health Nitric Oxide Production Exercise Capacity & Optimal Blood Flow* - Third-Party Certified - Dairy-Free - 180 Capsules

THORNE$73.164.8★104 rev

L-Arginine Pro 5 500mg L Arginine + 1 100mg Citrulline | Nitric Oxide Booster |Supports Pre Workout Energy Blood Flow & Circulation Grape (30 Servings)

L-ARGININE PRO$39.064.4★1,637 rev

Klerpath L-Arginine Plus Powder with 5110 mg L-Arginine and 1010 mg L-Citrulline - Nitric Oxide Supplement for Blood Flow and Circulation - Grape Flavor 13.4 Ounces

Klerpath$37.984.4★1,524 rev

Newest

by launch date

Dr. Emils Arginine Plus - L Arginine & L Citrulline Malate - High Dose 2500 MG Nitric Oxide Booster for Circulation Endurance & Workout Pump - Non-GMO

DR. EMIL NUTRITION$26.446,342 rev

7y ago

L-ARGININE PRO | 5 500mg L-Arginine Plus L-Citrulline 1 100mg | Powder Drink Mix | Nitric Oxide Booster | Supports Pre Workout Energy Blood Flow & Circulation for Men & Women

L-ARGININE PRO$39.01920 rev

8y ago

L-Arginine Plus Raspberry 6-Pack - #1 Natural Blood Pressure Supplement Better Cholesterol More Energy - Heart Health Supplement 13.4 oz

Klerpath$190.2469 rev

9y ago

L-Arginine Pro 5 500mg L Arginine + 1 100mg Citrulline | Nitric Oxide Booster |Supports Pre Workout Energy Blood Flow & Circulation Grape (30 Servings)

L-ARGININE PRO$39.061,637 rev

13y ago

L-arginine Plus - The Most Effective L-arginine Product on the Market with 5110mg L-arginine & 1010mg L-citrulline - Buy 3 and SAVE (Net Wt 13.4OZ)

Klerpath$100.41435 rev

14y ago

What reviews say buyers love and hate about l-arginine plus

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall32%

“Quality 10/10 so far I havent had any side effects”

Blood Pressure17%

“If you have blood pressure issues then this is a great solution”

Taste-Overall11%

“raspberry is also delicious”

Efficiency9%

“Effective”

Energy Level7%

“Reliable energy boost and nitric oxide”

Vitamin5%

“this is one of the supplements I take daily”

Flavor4%

“Not a bad flavor”

Heart Health4%

“Taking care of your heart”

Ingredients-Overall2%

“Increased my endurance after exercise intolerance, plus gluten- and sugar-free, delicious”

Advertised Vs Actual Product1%

“hopefully it will work as expected”

What buyers complain about

Functionality-Overall19%

“Doesn't really do what they say it does”

Measurement/Reading Accuracy13%

“No way to measure”

Ingredients-Overall13%

“substitution of vital ingredient”

Side Effects13%

“Did not see any benefits while taking this product”

Dosage6%

“I hear so much about it I'm trying it maybe I got to use a larger dose two scoops doesn't seem worth it then”

Acid Regulator/Stomach Ache Relief6%

“Dont use it if you wanna have diarrhea”

Quality-Overall6%

“Not the best”

Ease Of Chewing/Swallowing4%

“difficult to swallow”

Size-Overall4%

“Pills should be smaller as size makes them difficult to swallow”

Value For Money4%

“Small amount for the money”

Common l-arginine plus questions

Is l-arginine plus profitable to sell on Amazon United States?: The niche generates $31K/yr across 8 tracked products. 90-day search growth is +11.0%. Flapen's verdict: Skip it (40/100).
How competitive is the l-arginine plus niche?: 5 brands and 6 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in l-arginine plus?: Top complaints mined from reviews: Functionality-Overall, Measurement/Reading Accuracy, Ingredients-Overall. The return rate is 0.0%.
When does demand for l-arginine plus peak?: Demand peaks in Sep; the busiest month runs 1.5× the quietest.
What does it cost to enter the l-arginine plus niche?: Listings span $26.44–$190.24; the average listing price is $69.73 (sweet spot $15–$100). The average incumbent carries 1,384 reviews — the moat a new listing must climb.