Leucine
MaybeAn estimated 0.0% of orders come back. But the top 5 products take 76% of clicks, so Leucine is a Maybe.
- Flapen Score
- 61 / 100Top 9% of 14,768 Health & Household niches · +12 vs the category median of 4961
- Market size
- $751K/yr341K searches / yr
- 90-day growth
- +46.5%search demand this quarter
- Competition
- 76%top-5 click share · 10 brands · 23 sellers
Flapen Score
Leucine against its category
The dotted line is the Health & Household average. Past it, Leucine is stronger. Inside it, weaker.
Market
The Leucine market on Amazon at a glance
Shoppers on Amazon United States searched for Leucine 341K times last year and spent an estimated $751K. The top 5 brands take 88% of clicks. Demand peaks in Jul. Flapen scores it 61 out of 100, a Maybe.
01 · Demand
An estimated 9.2% of those searches ended in a purchase.
Shoppers searched for this 341K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 9.2% of those searches ended in a purchase. Searches in the last 90 days moved +46.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $751K a year.
- Searches, last 12 months
- 341K
- Growth, 90 days vs prior 90
- +46.5%
- Conversion, latest week
- 9.2%
- Market size, estimated
- $751Ka year
- Peak month
- July1.7× the quietest month
- Top search term
- leucine128K searches a year
02 · Price
A sale here is worth $23.91.
Listings sell for $23.91 on average, from $13.21 to $53.21. Amazon reports units sold in ranges. This niche sold 30K to 40K a year. The average listing sells 2,500 to 3,000 of them. At $23.91 that is $60K to $72K a year per listing.
- Average price
- $23.91inside the $15 to $100 sweet spot
- Price range
- $13.21–$53.21
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 30K–40K
- Units per listing a year
- 2,500–3,000
- Revenue per listing a year
- $60K–$72K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
93% 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 #257 within Amino Acids. It carries 1,603 reviews at 4.49 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 93%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #257in Amino Acids
- Average rating
- 4.49 starsAmazon United States average 4.42 stars
- Average reviews
- 1,603per listing
- Listings tracked
- 14
04 · Newcomers
0 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 71 months on average, so the names here are established.
- Launched, last 12 months
- 1
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 71 months
Products
Top Leucine 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-Leucine 2 000mg 120 Vegetarian Capsules Gluten-Free
- Price
- $13.79
- Rating
- 4.6/5
- Reviews
- 1,572
- Age
- 3y ago

Nutricost Pure L-Leucine Powder 500 Grams
- Price
- $21.77
- Rating
- 4.4/5
- Reviews
- 2,815
- Age
- 10y ago

BulkSupplements.com L-Leucine Capsules - Leucine Supplements Leucine Amino Acid BCAA Supplements Leucine 5000mg - Gluten Free 10 Capsules per Serving - 30-Day Supply 300 Capsules
- Price
- $19.42
- Rating
- 4.2/5
- Reviews
- 401
- Age
- 3y ago

NutraBio L-Leucine Supplement - Optimal Amino Acid for Muscle Growth & Recovery - Naturally Fermented Free Form Leucine Amino Acids Supplement- Vegan Non-GMO Gluten Free - 400mg 180 Capsules
- Price
- $20.37
- Rating
- 4.4/5
- Reviews
- 576
- Age
- 4y ago

Nutricost L-Isoleucine 2000mg Per Serving 240 Capsules (60 Servings)
- Price
- $15.75
- Rating
- 4.6/5
- Reviews
- 545
- Age
- 9y ago
Trending
estimated 90-day click momentum
BulkSupplements.com L-Leucine Powder - Leucine Supplements BCAA Supplements - Amino Acid Powder Unflavored 5g per Serving 250g (8.8 oz) (Pack of 1)
- Price
- $19.59
- Rating
- 4.3/5
- Reviews
- 1,963
- Age
- 12y ago

BodyHealth PerfectAmino (150 ct) Easy to Swallow Tablets Essential Amino Acids Supplement with BCAAs Vegan Protein for Pre/Post Workout & Muscle Recovery with Lysine Tryptophan Leucine Methionine
- Price
- $44.69
- Rating
- 4.5/5
- Reviews
- 3,615
- Age
- 4y ago

Clean Nutraceuticals Amino Acids Supplement L-Lysine L-Threonine L-Leucine Isoleucine Valine L-Histidine L-Tryptophan L-Methionine L-Arginine L-Cysteine L-Glutamine L-Serine Aspartic Acid
- Price
- $28.21
- Rating
- 4.5/5
- Reviews
- 870
- Age
- 2y ago

Essential Amino Acids - 1 Gram Per Serving Powder Blend of All 9 Essential Aminos (EAA) and All Branched-Chain Aminos (BCAAs) (Leucine Isoleucine Valine) 225 Capsules Gluten Free by Double Wood
- Price
- $18.76
- Rating
- 4.6/5
- Reviews
- 7,537
- Age
- 6y ago

Life Extension Branched Chain Amino Acids (BCAAs) leucine isoleucine valine Promotes Muscle Recovery After Exercise Gluten-Free Non-GMO 90 Capsules
- Price
- $13.89
- Rating
- 4.6/5
- Reviews
- 622
- Age
- 15y ago
Newest
by launch date
Jacked Factory HMB + Leucine Capsules - L-Leucine 2g HMB 1g - Stimulate Muscle Growth Protect Lean Muscle Mass and Improve Athletic Performance - 180 Capsules
- Price
- $13.21
- Rating
- 4.6/5
- Reviews
- 39
- Age
- 5mo ago

Clean Nutraceuticals Amino Acids Supplement L-Lysine L-Threonine L-Leucine Isoleucine Valine L-Histidine L-Tryptophan L-Methionine L-Arginine L-Cysteine L-Glutamine L-Serine Aspartic Acid
- Price
- $28.21
- Rating
- 4.5/5
- Reviews
- 870
- Age
- 2y ago

Nutricost L-Leucine 2 000mg 120 Vegetarian Capsules Gluten-Free
- Price
- $13.79
- Rating
- 4.6/5
- Reviews
- 1,572
- Age
- 3y ago

BulkSupplements.com L-Leucine Capsules - Leucine Supplements Leucine Amino Acid BCAA Supplements Leucine 5000mg - Gluten Free 10 Capsules per Serving - 30-Day Supply 300 Capsules
- Price
- $19.42
- Rating
- 4.2/5
- Reviews
- 401
- Age
- 3y ago

BodyHealth PerfectAmino (150 ct) Easy to Swallow Tablets Essential Amino Acids Supplement with BCAAs Vegan Protein for Pre/Post Workout & Muscle Recovery with Lysine Tryptophan Leucine Methionine
- Price
- $44.69
- Rating
- 4.5/5
- Reviews
- 3,615
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 76% of clicks. A locked shelf that new listings rarely crack.
Brands
10 flat
Sellers
23
Est. top-5 brand share
88%
Top 20: 100%
Est. top-5 click share
76%
Top 20: 100%
Open market
9%
- Nutricost57%
- BulkSupplements17%
- NutraBio7%
- Pure Encapsulations5%
- Life Extension3%
- Double Wood Supplements3%
- Open — no brand owns it (4 brands, 9%)
Demand
Leucine search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jul · busiest ÷ quietest = 1.7×
Search terms
Top Leucine search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- leucine128K/yr
- leucine supplements58K/yr
- l leucine25K/yr
- l-leucine23K/yr
- leucine and velositol supplement6K/yr
- lucine amino acids supplement13K/yr
- leucine amino acids supplement4K/yr
- leucine amino acid14K/yr
- leucine capsules15K/yr
- leucina12K/yr
Reviews and returns
What reviews say buyers love and hate about Leucine
We read the reviews and the return reasons for every product selling here.
“Bitter tasting”
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.
19 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 Leucine 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









