---
title: "L Glutamine — $514K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/l-glutamine"
last_updated: "2026-08-12T15:04:45.933Z"
locale: en
meta:
description: "Amazon product research for l glutamine: $514K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for l glutamine: $514K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "L Glutamine — $514K/mo Amazon US Product Research (2026)"
---
# **L Glutamine**
**Launch it**
A $6.2M/yr market growing +17.8% this quarter with returns at 0.0% — clears our launch bar.
Market size 98Growth 47Conversion 95Competition 60Returns 100Price range 87Avg price 94Brand share 49Review moat 25Quality gap 23
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$6.2M**
$6.2M/yr · 2.2M searches
**Conversion**
**Incredible****12.1%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$22.74**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.35–$64.94**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****49%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****75%**
top-5 brand share — brands hold most of the demand
**Growth**
**Okay****+17.8%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****4,777.96**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
## **Is l glutamine profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, l glutamine is a $6.2M/yr Amazon United States market (2.2M searches/yr). The top 5 brands hold 75% of demand. Demand peaks in May. Verdict: Launch it — 68/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **l glutamine market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **250K–300K**
- avg 10,000–12,500/product
- **Revenue / yr**
- **$5.7M–$6.8M**
- units × avg price
- **Conversion rate**
- **12.1%**
- **Avg BSR**
- **#140**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **84%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **75 months**
- **Avg seller age**
- **144 days**
## **Competition: brands, sellers & click share**
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▲rising
**Sellers**
**41**
**Top-5 brand share**
**75%**
Top 20: 100%
**Top-5 click share**
**49%**
Top 20: 94%
**Open market**
**20%**
- Nutricost37% - THORNE12% - Pure Encapsulations11% - NOW Foods11% - BulkSupplements4% - Sports Research4%
## **l glutamine demand & seasonality**
Weekly Amazon search volume, last 103 weeks — +17.8% search growth over the last 90 days.
60K40KHoliday '24Spike '25Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: May · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/us/health-household/l-glutamine/trend)
## **Top l glutamine search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **l glutamine**557K/yr+19.7%10.2% conv. - **glutamine**585K/yr+0.4%10.2% conv. - **l glutamine powder**285K/yr+69.7%10.0% conv. - **l-glutamine**207K/yr+5.4%10.7% conv. - **glutamine powder**195K/yr-4.2%10.2% conv. - **l-glutamine powder**72K/yr+45.3%10.9% conv. - **l glutamine capsules**80K/yr+13.5%10.5% conv. - **glutamina**47K/yr+21.9%3.4% conv. - **glutamine capsules**40K/yr-0.6%9.5% conv. - **l glutamine powder organic**15K/yr+156.6%7.5% conv. [**All search terms **](https://flapen.com/research/us/health-household/l-glutamine/search-terms)
## **Top l glutamine 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%5%$308K10%$617K15%$925K20%$1.2M101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutricost L-Glutamine Powder (500 Grams) Unflavored 100 Servings GMO-Free**Nutricost**$22.66**4.6★18,395 rev](https://www.amazon.com/dp/B00SHXE7VK) [2**NOW Foods Supplements L-Glutamine 500 mg Nitrogen Transporter* Amino Acid 120 Veg Capsules**NOW Foods**$9.35**4.5★13,166 rev](https://www.amazon.com/dp/B000QVCAKQ) [3**Nutricost L-Glutamine Powder 1 KG - Unflavored Non-GMO Gluten Free**Nutricost**$29.38**4.6★18,395 rev](https://www.amazon.com/dp/B01EVOOBIW) [4**Pure Encapsulations L-Glutamine 500 mg - Supplement for Immune and Digestive Support Gut Health and Lining Metabolism and Muscle Support* - with Free-Form L-Glutamine - 90 Capsules**Pure Encapsulations**$23.51**4.6★2,190 rev](https://www.amazon.com/dp/B000VYZG0O) [5**THORNE - L-Glutamine - Amino Acid Supplement for Immune System & GI Health - Promotes Post-Exercise Muscle Cell Repair* - Third-Party Certified - Gluten Dairy & Soy-Free - 90 Capsules**THORNE**$25.05**4.6★1,669 rev](https://www.amazon.com/dp/B0797N816M)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Amazon Basics L-Glutamine Powder 10.58 oz 100 Servings**Amazon Basics**$14.60**65 rev5mo ago](https://www.amazon.com/dp/B0FG7MRBWX) [**Wellah L-Glutamine Powder (Strawberry Lemonade) 50 Servings**Wellah**$18.90**289 rev1y ago](https://www.amazon.com/dp/B0DBN4JMWG) [**Sports Research L-Glutamine - Workout Recovery Immune Health & Gut Health Support - 5 G Per Serving - 17.64 Oz**Sports Research**$23.37**836 rev2y ago](https://www.amazon.com/dp/B0CCK2T1LN) [**Sports Research L-Glutamine - Workout Recovery Immune Health & Gut Health Support - 5 G Per Serving - 10.58 Oz**Sports Research**$14.21**836 rev2y ago](https://www.amazon.com/dp/B0CCJZY4C2) [**L Glutamine Capsules - (1000mg Servings 120 Capsules) Non-GMO Gluten Free Keto Safe Vegan Friendly Third Party Tested (for Endurance and Gut Health) by Double Wood**Double Wood Supplements**$9.92**542 rev2y ago](https://www.amazon.com/dp/B0CGB24861)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Amazon Basics L-Glutamine Powder 10.58 oz 100 Servings**Amazon Basics**$14.60**4.8★**▲ 103%**](https://www.amazon.com/dp/B0FG7MRBWX) [**Pure L-Glutamine Powder 2.2lbs (1kg) | Free Form Amino Acid | Unflavored Glutamine Supplement | Non-GMO Vegan Friendly**Micro Ingredients**$29.78**4.6★**▲ 77%**](https://www.amazon.com/dp/B01HFN37MC) [**Pure Encapsulations L-Glutamine Powder - Supplement for Immune and Digestive Support Gut Health and Lining Metabolism and Muscle Support* - with Pure Free-Form L-Glutamine - 8 Ounces**Pure Encapsulations**$54.05**4.6★**▲ 36%**](https://www.amazon.com/dp/B01N6E26ZX) [**Wellah L-Glutamine Powder (Strawberry Lemonade) 50 Servings**Wellah**$18.90**4.6★**▲ 30%**](https://www.amazon.com/dp/B0DBN4JMWG) [**Nutricost L-Glutamine Powder 1 KG - Unflavored Non-GMO Gluten Free**Nutricost**$29.38**4.6★**▲ 20%**](https://www.amazon.com/dp/B01EVOOBIW)
**~~View all trending →~~**
## **What reviews say buyers love and hate about l glutamine**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“It is very consistent in quality”*
**Value For Money**9%
*“Good price”*
**Taste-Overall**7%
*“Tastes good and is healthy”*
**Regulates Digestion**7%
*“HELPS GUT”*
**Vitamin**5%
*“Good suplement vitamin”*
**Solubility**5%
*“Its easy to mix”*
**Acid Regulator/Stomach Ache Relief**4%
*“No more pain or bloating”*
**Nutritional Content**3%
*“Great in protein coffee”*
**Advertised Vs Actual Product**3%
*“Good and as advertised”*
**Ease Of Use**2%
*“It makes my life easier honestly”*
### **What buyers complain about **
**Taste-Overall**16%
*“It doesnt taste right”*
**Dosage**5%
*“I know that possibly not long enough to take it for the effects to take hold”*
**Flavor**5%
*“Neutral Taste: It is truly unflavored”*
**Quality-Overall**5%
*“Poor quality control”*
**Allergies**4%
*“have a corn allergy/intolerance”*
**Solubility**3%
*“Never dissolves”*
**Functionality-Overall**3%
*“this one felt like it made no impact”*
**Smell**3%
*“Chemical smell now”*
**Ingredients-Overall**3%
*“Formula Changed and I'm Sad”*
**Size-Overall**2%
*“Would be 5 stars if the container were slightly smaller”*
### **Top return reasons **
**Value For Money**30%
**Size-Overall**10%
**Regulates Digestion**10%
**Acid Regulator/Stomach Ache Relief**10%
**Charging**10%
**Joint Pain**10%
**Functionality-Overall**10%
**Satisfaction/Pleasure**10%
## **Common l glutamine questions**
- **Is l glutamine profitable to sell on Amazon United States?**
- The niche generates $6.2M/yr across 25 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +17.8%. Flapen's verdict: Launch it (68/100).
- **How competitive is the l glutamine niche?**
- 16 brands and 41 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 75% of demand.
- **What do buyers complain about in l glutamine?**
- Top complaints mined from reviews: Taste-Overall, Dosage, Flavor. The return rate is 0.0%.
- **When does demand for l glutamine peak?**
- Demand peaks in May; the busiest month runs 2.1× the quietest.
- **What does it cost to enter the l glutamine niche?**
- Listings span $9.35–$64.94; the average listing price is $22.74 (sweet spot $15–$100). The average incumbent carries 4,778 reviews — the moat a new listing must climb.
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