L-glutamine 500mg Capsules
FailShoppers spend an estimated $13K a year here, so L-glutamine 500mg Capsules is a Fail.
- Flapen Score
- 45 / 100Ranks 9,665 of 14,768 Health & Household niches · −4 vs the category median of 4945
- Market size
- $13K/yr5K searches / yr
- 90-day growth
- +0.4%search demand this quarter
- Competition
- 66%top-5 click share · 11 brands · 34 sellers
Flapen Score
L-glutamine 500mg Capsules against its category
The dotted line is the Health & Household average. Past it, L-glutamine 500mg Capsules is stronger. Inside it, weaker.
Market
The L-glutamine 500mg Capsules market on Amazon at a glance
Shoppers on Amazon United States searched for L-glutamine 500mg Capsules 5K times last year and spent an estimated $13K. The top 5 brands take 77% of clicks. Demand peaks in Sep–Oct. Flapen scores it 45 out of 100, a Fail.
01 · Demand
An estimated 14.3% of those searches ended in a purchase.
Shoppers searched for this 5K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 14.3% of those searches ended in a purchase. Searches in the last 90 days moved +0.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $13K a year.
- Searches, last 12 months
- 5K
- Growth, 90 days vs prior 90
- +0.4%
- Conversion, latest week
- 14.3%
- Market size, estimated
- $13Ka year
- Peak month
- October2.3× the quietest month
- Top search term
- lglutamine capsules5K searches a year
02 · Price
A sale here is worth $17.06.
Listings sell for $17.06 on average, from $9.35 to $26.55. Amazon reports units sold in ranges. This niche sold 500 to 750 a year. The average listing sells 0 to 100 of them. At $17.06 that is $0 to $2K a year per listing.
- Average price
- $17.06inside the $15 to $100 sweet spot
- Price range
- $9.35–$26.55
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 500–750
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$2K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
85% 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 #100 within Amino Acids. It carries 2,310 reviews at 4.60 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 85%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #100in Amino Acids
- Average rating
- 4.60 starsAmazon United States average 4.42 stars
- Average reviews
- 2,310per listing
- Listings tracked
- 13
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 106 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 106 months
Products
Top L-glutamine 500mg Capsules 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
NOW Foods Supplements L-Glutamine 500 mg Nitrogen Transporter* Amino Acid 120 Veg Capsules
- Price
- $9.35
- Rating
- 4.5/5
- Reviews
- 13,166
- Age
- 22y ago

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
- Price
- $23.51
- Rating
- 4.6/5
- Reviews
- 2,190
- Age
- 9y ago

Nutricost L-Glutamine 800mg 180 Capsules - Gluten Free Non-GMO
- Price
- $15.77
- Rating
- 4.5/5
- Reviews
- 4,740
- Age
- 10y ago

Now L-Glutamine 500mg 300 Veg Capsules - Non-GMO Supplement - Vegan Lglutamine Caps
- Price
- $23.97
- Rating
- 4.7/5
- Reviews
- 1,330
- Age
- 7y ago

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
- Price
- $25.05
- Rating
- 4.6/5
- Reviews
- 1,669
- Age
- 21y ago
Trending
estimated 90-day click momentum
NOW Foods Sports Nutrition L-Glutamine Double Strength 1 000 mg Amino Acid 120 Veg Capsules
- Price
- $13.22
- Rating
- 4.7/5
- Reviews
- 974
- Age
- 16y ago

BulkSupplements.com L-Glutamine Capsules - Glutamine Supplement Amino Acid Supplement - Gluten Free 6 Capsules per Serving (5000mg) 360 Count (Pack of 1)
- Price
- $26.55
- Rating
- 4.6/5
- Reviews
- 533
- Age
- 3y ago

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
- Price
- $25.05
- Rating
- 4.6/5
- Reviews
- 1,669
- Age
- 21y ago

NAKED L-Glutamine Muscle Recovery Capsules 1000mg 240 Count Made in The USA Non-GMO Gluten and Soy Free
- Price
- $19.85
- Rating
- 4.7/5
- Reviews
- 2,177
- Age
- 2y ago

Horbaach L Glutamine Capsules 1000mg | 180 Powder Pills
- Price
- $9.99
- Rating
- 4.7/5
- Reviews
- 411
- Age
- 3y ago
Newest
by launch date
Vykee Nutrition L-Glutamine Capsules 1500 mg
- Price
- $19.22
- Rating
- 4.5/5
- Reviews
- 172
- Age
- 1y ago

NAKED L-Glutamine Muscle Recovery Capsules 1000mg 240 Count Made in The USA Non-GMO Gluten and Soy Free
- Price
- $19.85
- Rating
- 4.7/5
- Reviews
- 2,177
- Age
- 2y ago

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
- Price
- $9.92
- Rating
- 4.6/5
- Reviews
- 542
- Age
- 2y ago

Horbaach L Glutamine Capsules 1000mg | 180 Powder Pills
- Price
- $9.99
- Rating
- 4.7/5
- Reviews
- 411
- Age
- 3y ago

Amazing Formulas L-Glutamine Amino Acid Supplement | 800 Mg Per Serving | 180 Capsules | Non-GMO | Gluten Free | Made in USA
- Price
- $14.97
- Rating
- 4.5/5
- Reviews
- 61
- Age
- 3y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 66% of clicks. Leaders hold, but buyers still shop past them.
Brands
11 flat
Sellers
34
Est. top-5 brand share
77%
Top 20: 100%
Est. top-5 click share
66%
Top 20: 100%
Open market
18%
- NOW Foods34%
- Pure Encapsulations16%
- Nutricost14%
- THORNE7%
- Horbäach6%
- Amazing Nutrition5%
- Open — no brand owns it (5 brands, 18%)
Demand
L-glutamine 500mg Capsules search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Sep, Oct · busiest ÷ quietest = 2.3×
Reviews and returns
What reviews say buyers love and hate about L-glutamine 500mg Capsules
We read the reviews and the return reasons for every product selling here.
“I have learned that it is a very bad dosage amount”
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
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Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common L-glutamine 500mg Capsules 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









