L-arginine 500mg
FailShoppers spend an estimated $47K a year here, so L-arginine 500mg is a Fail.
- Flapen Score
- 44 / 100Ranks 10,233 of 14,768 Health & Household niches · −5 vs the category median of 4944
- Market size
- $47K/yr16K searches / yr
- 90-day growth
- +2.3%search demand this quarter
- Competition
- 77%top-5 click share · 9 brands · 584 sellers
Flapen Score
L-arginine 500mg against its category
The dotted line is the Health & Household average. Past it, L-arginine 500mg is stronger. Inside it, weaker.
Market
The L-arginine 500mg market on Amazon at a glance
Shoppers on Amazon United States searched for L-arginine 500mg 16K times last year and spent an estimated $47K. The top 5 brands take 89% of clicks. Flapen scores it 44 out of 100, a Fail.
01 · Demand
An estimated 16.4% of those searches ended in a purchase.
Shoppers searched for this 16K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 16.4% of those searches ended in a purchase. Searches in the last 90 days moved +2.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated $47K a year.
- Searches, last 12 months
- 16K
- Growth, 90 days vs prior 90
- +2.3%
- Conversion, latest week
- 16.4%
- Market size, estimated
- $47Ka year
- Peak month
- May1.7× the quietest month
- Top search term
- l-arginine 500mg10K searches a year
02 · Price
A sale here is worth $17.83.
Listings sell for $17.83 on average, from $7.76 to $42.79. Amazon reports units sold in ranges. This niche sold 3K to 3K a year. The average listing sells 100 to 250 of them. At $17.83 that is $2K to $4K a year per listing.
- Average price
- $17.83inside the $15 to $100 sweet spot
- Price range
- $7.76–$42.79
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 3K–3K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $2K–$4K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
64% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #264 within Amino Acids. It carries 7,842 reviews at 4.53 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 64%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #264in Amino Acids
- Average rating
- 4.53 starsAmazon United States average 4.42 stars
- Average reviews
- 7,842per listing
- Listings tracked
- 14
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 112 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 112 months
Products
Top L-arginine 500mg products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 25, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
NOW Foods Supplements L-Arginine 500 mg Nitric Oxide Precursor* Amino Acid 250 Veg Capsules
- Price
- $15.70
- Rating
- 4.6/5
- Reviews
- 7,305
- Age
- 22y ago

Nutricost L-Arginine 500mg 300 Capsules - Gluten Free and Non-GMO
- Price
- $17.70
- Rating
- 4.6/5
- Reviews
- 3,060
- Age
- 10y ago

Best Naturals L-Arginine 500mg 250 Capsules - Pharmaceutical Grade L Arginine supplement promotes nitric oxide synthesis
- Price
- $11.92
- Rating
- 4.7/5
- Reviews
- 336
- Age
- 11y ago

NOW Foods Supplements L-Arginine 500 mg Nitric Oxide Precursor* Amino Acid 100 Veg Capsules
- Price
- $7.76
- Rating
- 4.6/5
- Reviews
- 7,305
- Age
- 22y ago

Spring Valley: 100 Capsules 500 Mg Ea. L-Arginine (Pack of 2)
- Price
- $18.45
- Rating
- 4.1/5
- Reviews
- 106
- Age
- 8y ago
Trending
estimated 90-day click momentum
Best Naturals L-Arginine 500mg 250 Capsules (250 Count (Pack of 2))
- Price
- $21.43
- Rating
- 4.7/5
- Reviews
- 336
- Age
- 11y ago

365 by Whole Foods Market L Arginine 500Mg 100 Veggie Caps
- Price
- $10.71
- Rating
- 4.5/5
- Reviews
- 184
- Age
- 8y ago

L-Arginine and L-Citrulline for Men Nitric Oxide Support 30 Servings
- Price
- $23.73
- Rating
- 4.2/5
- Reviews
- 55,008
- Age
- 9y ago

NOW Foods Supplements L-Arginine 1 000 mg Nitric Oxide Precursor* Amino Acid 120 Tablets
- Price
- $17.04
- Rating
- 4.5/5
- Reviews
- 14,869
- Age
- 22y ago

Swanson Amino Acid L-Arginine 500 Milligrams 200 Capsules
- Price
- $13.20
- Rating
- 4.6/5
- Reviews
- 237
- Age
- 21y ago
Newest
by launch date
Spring Valley: 100 Capsules 500 Mg Ea. L-Arginine (Pack of 2)
- Price
- $18.45
- Rating
- 4.1/5
- Reviews
- 106
- Age
- 8y ago

365 by Whole Foods Market L Arginine 500Mg 100 Veggie Caps
- Price
- $10.71
- Rating
- 4.5/5
- Reviews
- 184
- Age
- 8y ago

L-Arginine and L-Citrulline for Men Nitric Oxide Support 30 Servings
- Price
- $23.73
- Rating
- 4.2/5
- Reviews
- 55,008
- Age
- 9y ago

Nutricost L-Arginine 500mg 300 Capsules - Gluten Free and Non-GMO
- Price
- $17.70
- Rating
- 4.6/5
- Reviews
- 3,060
- Age
- 10y ago

Best Naturals L-Arginine 500mg 250 Capsules - Pharmaceutical Grade L Arginine supplement promotes nitric oxide synthesis
- Price
- $11.92
- Rating
- 4.7/5
- Reviews
- 336
- Age
- 11y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 77% of clicks. A locked shelf that new listings rarely crack.
Brands
9 flat
Sellers
584
Est. top-5 brand share
89%
Top 20: 100%
Est. top-5 click share
77%
Top 20: 100%
Open market
7%
- NOW Foods41%
- Nutricost19%
- Best Naturals15%
- Spring Valley8%
- HAVASU NUTRITION5%
- 365 by Whole Foods Market4%
- Open — no brand owns it (3 brands, 7%)
Demand
L-arginine 500mg search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.7×
Reviews and returns
What reviews say buyers love and hate about L-arginine 500mg
We read the reviews and the return reasons for every product selling here.
“Capsules too large”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common L-arginine 500mg questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









