---
title: "Leucine Powder — $37K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/leucine-powder"
last_updated: "2026-08-12T16:25:25.843Z"
locale: en
meta:
description: "Amazon product research for leucine powder: $37K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for leucine powder: $37K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Leucine Powder — $37K/mo Amazon US Product Research (2026)"
---
# **Leucine Powder**
**Worth a look**
Shows low returns (0.0%), but brand-locked demand (top 5 brands take 97% of clicks) keeps it on the watch list.
Market size 58Growth 21Conversion 95Competition 13Returns 100Price range 91Avg price 95Brand share 7Review moat 57Quality gap 68
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****12.7%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$25.43**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$13.79–$40.22**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Market size**
**Good****$448K**
$448K/yr · 139K searches
**Review moat**
**Good****1,202.9**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-8.6%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****84%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****97%**
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 ~~](https://flapen.com/research/methodology)
## **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.
9K7KSpike '25Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Jul, Aug, Sep, Nov · busiest ÷ quietest = 6.2×
[**Open Trend **](https://flapen.com/research/us/health-household/leucine-powder/trend)
## **Top leucine powder search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **leucine powder**78K/yr-2.9%9.6% conv. - **l leucine powder**20K/yr-10.5%10.9% conv. - **l-leucine powder**12K/yr-3.9%11.7% conv. - **leucine protein powder**3K/yr-2.8%2.0% conv. - **leucina en polvo para el cafe**11K/yr-55.6%1.9% conv. - **leucina en polvo**4K/yr-18.5%3.0% conv. - **leucine powder organic**6K/yr-40.7%6.9% conv. - **leucina pura en polvo**4K/yr-54.5%5.0% conv. - **leucina polvo**2K/yr-45.8%0.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/leucine-powder/search-terms)
## **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.
0%15%$67K30%$134K45%$201K60%$269K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutricost Pure L-Leucine Powder 500 Grams**Nutricost**$21.77**4.4★2,815 rev](https://www.amazon.com/dp/B01BCNGPCU) [2**BulkSupplements.com L-Leucine Powder - Leucine Supplements BCAA Supplements - Amino Acid Powder Unflavored 5g per Serving 250g (8.8 oz) (Pack of 1)**BulkSupplements**$19.59**4.3★1,963 rev](https://www.amazon.com/dp/B00GW5ZHI2) [3**Primaforce L-Leucine Powder 1 KG (2.2lbs) Pure L-Leucine Powder**Primaforce**$35.42**4.2★123 rev](https://www.amazon.com/dp/B0C44NXJGJ) [4**NutraBio 100% Pure L-Leucine - Muscle Recovery and Support - Naturally Fermented Free Form Amino Acid - Vegan Non-GMO Gluten Free - (500 Grams)**NutraBio**$30.26**4.3★455 rev](https://www.amazon.com/dp/B00333F9N4) [5**BulkSupplements.com L-Leucine Powder - Leucine Supplements BCAA Supplements - Amino Acid Powder Unflavored 5g per Serving 1kg (2.2 lbs) (Pack of 1)**BulkSupplements**$40.22**4.3★1,963 rev](https://www.amazon.com/dp/B00GW5ZHH8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Primaforce L-Leucine Powder 1 KG (2.2lbs) Pure L-Leucine Powder**Primaforce**$35.42**123 rev3y ago](https://www.amazon.com/dp/B0C44NXJGJ) [**Nutricost L-Leucine 2 000mg 120 Vegetarian Capsules Gluten-Free**Nutricost**$13.79**1,572 rev3y ago](https://www.amazon.com/dp/B0BLXDGBRN) [**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**$19.42**401 rev3y ago](https://www.amazon.com/dp/B0BL1WJNCF) [**Pure Original Ingredients L-Leucine (1lb) Powder Essential Amino Acid Supplement Lab-Verified**PURE ORIGINAL INGREDIENTS**$20.02**64 rev5y ago](https://www.amazon.com/dp/B08WY9QNYT) [**Nutricost Pure L-Leucine Powder 500 Grams**Nutricost**$21.77**2,815 rev10y ago](https://www.amazon.com/dp/B01BCNGPCU)
**~~View all new products →~~**
### **Trending**
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)**BulkSupplements**$19.59**4.3★**▲ 348%**](https://www.amazon.com/dp/B00GW5ZHI2) [**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**$19.42**4.2★**▲ 114%**](https://www.amazon.com/dp/B0BL1WJNCF) [**Primaforce L-Leucine Powder 1 KG (2.2lbs) Pure L-Leucine Powder**Primaforce**$35.42**4.2★**▲ 58%**](https://www.amazon.com/dp/B0C44NXJGJ) [**NOW Foods Sports Nutrition L-Leucine Powder Builds Lean Tissue* Amino Acids 9-Ounce**NOW Foods**$27.05**4.3★**— 7%**](https://www.amazon.com/dp/B00K9IKVW0) [**Pure Original Ingredients L-Leucine (1lb) Powder Essential Amino Acid Supplement Lab-Verified**PURE ORIGINAL INGREDIENTS**$20.02**4.5★**— 4%**](https://www.amazon.com/dp/B08WY9QNYT)
**~~View all trending →~~**
## **What reviews say buyers love and hate about leucine powder**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**16%
*“Good quality product”*
**Value For Money**10%
*“Great deal”*
**Advertised Vs Actual Product**9%
*“As advertised”*
**Muscle Pain Relief**9%
*“A great product for leg strength”*
**Dosage**7%
*“Affordable price for the dosage pero capsule”*
**Nutritional Content**5%
*“Seems to work well for being the most important of the BCAA stack”*
**Weight Loss**4%
*“Fat loss accelerated”*
**Texture/Consistency-Overall**4%
*“method and consistency is key”*
**Ease Of Use**4%
*“Great to use”*
**Taste-Overall**3%
*“No weird aftertaste, unlike that protein powder that tastes like chalk and regret”*
### **What buyers complain about **
**Smell**19%
*“the smell is like a fart”*
**Taste-Overall**18%
*“Bitter tasting”*
**Solubility**8%
*“Does not mix well with liquids”*
**Dosage**6%
*“Not Best Way to Get One's Maintenance Dosage of L-Leucine”*
**Bitter**5%
*“Bitter aftertaste”*
**Flavor**4%
*“Yucky,”*
**Strength**3%
*“Not so strong results”*
**Muscle Pain Relief**3%
*“Product caused muscle weakness”*
**Ingredients-Overall**3%
*“This one, like many others, is not just one ingredient where with many other company products, it is”*
**Functionality-Overall**3%
*“Did not work too well for me”*
### **Top return reasons **
**Acid Regulator/Stomach Ache Relief**33%
**Smell**33%
**Leak-Proof**33%
## **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.
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