Ornithine
MaybeAn estimated 0.1% of orders come back. But the top 5 products take 72% of clicks, so Ornithine is a Maybe.
- Flapen Score
- 51 / 100Top 40% of 14,768 Health & Household niches · +2 vs the category median of 4951
- Market size
- $115K/yr52K searches / yr
- 90-day growth
- +14.4%search demand this quarter
- Competition
- 72%top-5 click share · 9 brands · 22 sellers
Flapen Score
Ornithine against its category
The dotted line is the Health & Household average. Past it, Ornithine is stronger. Inside it, weaker.
Market
The Ornithine market on Amazon at a glance
Shoppers on Amazon United States searched for Ornithine 52K times last year and spent an estimated $115K. The top 5 brands take 87% of clicks. Flapen scores it 51 out of 100, a Maybe.
01 · Demand
An estimated 12.2% of those searches ended in a purchase.
Shoppers searched for this 52K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 12.2% of those searches ended in a purchase. Searches in the last 90 days moved +14.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $115K a year.
- Searches, last 12 months
- 52K
- Growth, 90 days vs prior 90
- +14.4%
- Conversion, latest week
- 12.2%
- Market size, estimated
- $115Ka year
- Peak month
- August1.5× the quietest month
- Top search term
- l ornithine17K searches a year
02 · Price
A sale here is worth $18.10.
Listings sell for $18.10 on average, from $9.82 to $39.44. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 250 to 500 of them. At $18.10 that is $5K to $9K a year per listing.
- Average price
- $18.10inside the $15 to $100 sweet spot
- Price range
- $9.82–$39.44
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 5K–6K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $5K–$9K
- Returns
- 0.1%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
79% 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 #708 within Amino Acids. It carries 436 reviews at 4.60 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 79%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #708in Amino Acids
- Average rating
- 4.60 starsAmazon United States average 4.42 stars
- Average reviews
- 436per listing
- Listings tracked
- 14
04 · Newcomers
1 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 103 months on average, so the names here are established.
- Launched, last 12 months
- 1
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 103 months
Products
Top Ornithine 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
Nutricost L-Ornithine 500mg 180 Capsules - Non-GMO and Gluten Free
- Price
- $14.82
- Rating
- 4.6/5
- Reviews
- 637
- Age
- 10y ago

NOW Foods Supplements L-Ornithine (L-Ornithine Hydrochloride) 500 mg Amino Acid 120 Veg Capsules
- Price
- $14.79
- Rating
- 4.7/5
- Reviews
- 1,584
- Age
- 19y ago

Dr Clark Ornithine Dietary Supplement 500mg 100 Gelatin Capsules Pure Amino Acid Support for Natural Sleep Aid Promotes Protein Metabolism Cleansing and Detoxification Non-GMO & Gluten Free
- Price
- $18.90
- Rating
- 4.6/5
- Reviews
- 448
- Age
- 15y ago

Nutricost L-Arginine L-Ornithine 750mg; 180 Capsules
- Price
- $16.73
- Rating
- 4.6/5
- Reviews
- 1,464
- Age
- 10y ago

BulkSupplements.com L-Ornithine HCl Capsules (360 Count (Pack of 1)
- Price
- $19.76
- Rating
- 4.6/5
- Reviews
- 54
- Age
- 1y ago
Trending
estimated 90-day click momentum
Pure Encapsulations Growth Hormone Support - Arginine & Ornithine Amino Acid Blend - Supports Healthy Hormone Balance - Muscles & Training Support - Gluten-Free & Non-GMO - 90 Capsules
- Price
- $39.44
- Rating
- 4.5/5
- Reviews
- 29
- Age
- 4mo ago

BulkSupplements.com L-Ornithine HCl Capsules (360 Count (Pack of 1)
- Price
- $19.76
- Rating
- 4.6/5
- Reviews
- 54
- Age
- 1y ago

Amazing Formulas L-Ornithine 1500 Mg Per Serving Veggie Capsules Supplement | Non-GMO | Gluten Free | Made in USA (120 Count)
- Price
- $12.89
- Rating
- 4.7/5
- Reviews
- 142
- Age
- 7y ago

BulkSupplements.com L-Ornithine L-Aspartate Powder - Ornithine Supplement Amino Acid Supplement - Gluten Free 3g per Serving 250g (8.8 oz) (Pack of 1)
- Price
- $18.88
- Rating
- 4.6/5
- Reviews
- 296
- Age
- 7y ago

Best Naturals L-Arginine L-Ornithine - 1000mg per Serving - 120 Tablets - Non-GMO & Gluten Free (120 Count (Pack of 1))
- Price
- $9.82
- Rating
- 4.5/5
- Reviews
- 294
- Age
- 3y ago
Newest
by launch date
Pure Encapsulations Growth Hormone Support - Arginine & Ornithine Amino Acid Blend - Supports Healthy Hormone Balance - Muscles & Training Support - Gluten-Free & Non-GMO - 90 Capsules
- Price
- $39.44
- Rating
- 4.5/5
- Reviews
- 29
- Age
- 4mo ago

BulkSupplements.com L-Ornithine HCl Capsules (360 Count (Pack of 1)
- Price
- $19.76
- Rating
- 4.6/5
- Reviews
- 54
- Age
- 1y ago

BulkSupplements.com L-Ornithine HCl Capsules - L-Ornithine Hydrochloride L-Ornithine 1000mg - Amino Acids Supplement Gluten Free 2 Capsules per Serving 180 Count (Pack of 1)
- Price
- $17.02
- Rating
- 4.6/5
- Reviews
- 54
- Age
- 3y ago

Best Naturals L-Arginine L-Ornithine - 1000mg per Serving - 120 Tablets - Non-GMO & Gluten Free (120 Count (Pack of 1))
- Price
- $9.82
- Rating
- 4.5/5
- Reviews
- 294
- Age
- 3y ago

Pure Original Ingredients L-Ornithine (100 Capsules) Always Pure No Additives Or Fillers Lab Verified
- Price
- $11.02
- Rating
- 4.6/5
- Reviews
- 45
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 72% of clicks. A locked shelf that new listings rarely crack.
Brands
9 rising
Sellers
22
Est. top-5 brand share
87%
Top 20: 100%
Est. top-5 click share
72%
Top 20: 100%
Open market
7%
- Nutricost31%
- NOW Foods22%
- BulkSupplements16%
- Dr Clark Store12%
- Amazing Nutrition6%
- Horbäach5%
- Open — no brand owns it (3 brands, 7%)
Demand
Ornithine search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.5×
Search terms
Top Ornithine search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- l ornithine17K/yr
- ornithine19K/yr
- l-ornithine11K/yr
- ornithine supplement6K/yr
Reviews and returns
What reviews say buyers love and hate about Ornithine
We read the reviews and the return reasons for every product selling here.
“The real deal should have almost no smell”
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.
13 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 Ornithine 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









