Leucine Powder
Worth a lookShows low returns (0.0%), but brand-locked demand (top 5 brands take 97% of clicks) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible12.7%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$25.43avg listing price — sweet spot $15–$100
Price range
Great$13.79–$40.22cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Market size
Good$448K$448K/yr · 139K searches
Review moat
Good1,202.9avg incumbent reviews — the moat a new listing must climb
Growth
Bad-8.6%90-day search growth — must beat 0% to launch
Competition
Bad84%top-5 click share — a locked-up shelf
Brand share
Bad97%top-5 brand share — brand-locked demand
Is leucine powder profitable on Amazon?
According to Flapen's Amazon United States niche tracking, leucine powder is a $448K/yr Amazon United States market (139K searches/yr). The top 5 brands hold 97% of demand. Demand peaks in Jul–Aug–Sep–Nov. Verdict: Worth a look — 53/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
leucine powder market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 13K–15K
- avg 1,000–1,250/product
- Revenue / yr
- $318K–$381K
- units × avg price
- Conversion rate
- 12.7%
- Avg BSR
- #752
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 2.6%
- Avg brand age
- 74 months
- Avg seller age
- 152 days
Competition: brands, sellers & click share
The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 falling
Sellers
14
Top-5 brand share
97%
Top 20: 100%
Top-5 click share
84%
Top 20: 100%
Open market
0%
- Nutricost51%
- BulkSupplements28%
- Primaforce11%
- NutraBio5%
- NOW Foods3%
- PURE ORIGINAL INGREDIENTS3%
leucine powder demand & seasonality
Weekly Amazon search volume, last 97 weeks — -8.6% search growth over the last 90 days.Peak months: Jul, Aug, Sep, Nov · busiest ÷ quietest = 6.2×
Top leucine powder search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- leucine powder78K/yr
- l leucine powder20K/yr
- l-leucine powder12K/yr
- leucine protein powder3K/yr
- leucina en polvo para el cafe11K/yr
- leucina en polvo4K/yr
- leucine powder organic6K/yr
- leucina pura en polvo4K/yr
- leucina polvo2K/yr
Top leucine powder 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 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nutricost Pure L-Leucine Powder 500 Grams
Nutricost$21.774.4★2,815 rev
BulkSupplements.com L-Leucine Powder - Leucine Supplements BCAA Supplements - Amino Acid Powder Unflavored 5g per Serving 250g (8.8 oz) (Pack of 1)
BulkSupplements$19.594.3★1,963 rev
Primaforce L-Leucine Powder 1 KG (2.2lbs) Pure L-Leucine Powder
Primaforce$35.424.2★123 rev
NutraBio 100% Pure L-Leucine - Muscle Recovery and Support - Naturally Fermented Free Form Amino Acid - Vegan Non-GMO Gluten Free - (500 Grams)
NutraBio$30.264.3★455 rev
BulkSupplements.com L-Leucine Powder - Leucine Supplements BCAA Supplements - Amino Acid Powder Unflavored 5g per Serving 1kg (2.2 lbs) (Pack of 1)
BulkSupplements$40.224.3★1,963 rev
Newest
by launch datePrimaforce L-Leucine Powder 1 KG (2.2lbs) Pure L-Leucine Powder
Primaforce$35.42123 rev
Nutricost L-Leucine 2 000mg 120 Vegetarian Capsules Gluten-Free
Nutricost$13.791,572 rev
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
BulkSupplements$19.42401 rev
Pure Original Ingredients L-Leucine (1lb) Powder Essential Amino Acid Supplement Lab-Verified
PURE ORIGINAL INGREDIENTS$20.0264 rev
Nutricost Pure L-Leucine Powder 500 Grams
Nutricost$21.772,815 rev
Trending
90-day click momentumBulkSupplements.com L-Leucine Powder - Leucine Supplements BCAA Supplements - Amino Acid Powder Unflavored 5g per Serving 250g (8.8 oz) (Pack of 1)
BulkSupplements$19.594.3★
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
BulkSupplements$19.424.2★
Primaforce L-Leucine Powder 1 KG (2.2lbs) Pure L-Leucine Powder
Primaforce$35.424.2★
NOW Foods Sports Nutrition L-Leucine Powder Builds Lean Tissue* Amino Acids 9-Ounce
NOW Foods$27.054.3★
Pure Original Ingredients L-Leucine (1lb) Powder Essential Amino Acid Supplement Lab-Verified
PURE ORIGINAL INGREDIENTS$20.024.5★
What reviews say buyers love and hate about leucine powder
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality product”
“Great deal”
“As advertised”
“A great product for leg strength”
“Affordable price for the dosage pero capsule”
“Seems to work well for being the most important of the BCAA stack”
“Fat loss accelerated”
“method and consistency is key”
“Great to use”
“No weird aftertaste, unlike that protein powder that tastes like chalk and regret”
What buyers complain about
“the smell is like a fart”
“Bitter tasting”
“Does not mix well with liquids”
“Not Best Way to Get One's Maintenance Dosage of L-Leucine”
“Bitter aftertaste”
“Yucky,”
“Not so strong results”
“Product caused muscle weakness”
“This one, like many others, is not just one ingredient where with many other company products, it is”
“Did not work too well for me”
Top return reasons
Common leucine powder questions
- Is leucine powder profitable to sell on Amazon United States?
- The niche generates $448K/yr across 10 tracked products. 90-day search growth is -8.6%. Flapen's verdict: Worth a look (53/100).
- How competitive is the leucine powder niche?
- 6 brands and 14 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 97% of demand.
- What do buyers complain about in leucine powder?
- Top complaints mined from reviews: Smell, Taste-Overall, Solubility. The return rate is 0.0%.
- When does demand for leucine powder peak?
- Demand peaks in Jul–Aug–Sep–Nov; the busiest month runs 6.2× the quietest.
- What does it cost to enter the leucine powder niche?
- Listings span $13.79–$40.22; the average listing price is $25.43 (sweet spot $15–$100). The average incumbent carries 1,203 reviews — the moat a new listing must climb.