Glycine 3g
FailDemand is soft, at -34.4% this quarter, so Glycine 3g is a Fail.
- Flapen Score
- 48 / 100Ranks 7,720 of 14,768 Health & Household niches · −1 vs the category median of 4948
- Market size
- $171K/yr81K searches / yr
- 90-day growth
- -34.4%search demand this quarter
- Competition
- 69%top-5 click share · 13 brands · 31 sellers
Flapen Score
Glycine 3g against its category
The dotted line is the Health & Household average. Past it, Glycine 3g is stronger. Inside it, weaker.
Market
The Glycine 3g market on Amazon at a glance
Shoppers on Amazon United States searched for Glycine 3g 81K times last year and spent an estimated $171K. The top 5 brands take 75% of clicks. Demand peaks in Jan–Feb–Mar–Dec. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 10.9% of those searches ended in a purchase.
Shoppers searched for this 81K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 10.9% of those searches ended in a purchase. Searches in the last 90 days moved -34.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $171K a year.
- Searches, last 12 months
- 81K
- Growth, 90 days vs prior 90
- -34.4%
- Conversion, latest week
- 10.9%
- Market size, estimated
- $171Ka year
- Peak month
- February3.8× the quietest month
- Top search term
- glycine 3g76K searches a year
02 · Price
A sale here is worth $19.46.
Listings sell for $19.46 on average, from $9.89 to $33.21. Amazon reports units sold in ranges. This niche sold 10K to 13K a year. The average listing sells 500 to 750 of them. At $19.46 that is $10K to $15K a year per listing.
- Average price
- $19.46inside the $15 to $100 sweet spot
- Price range
- $9.89–$33.21
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 10K–13K
- Units per listing a year
- 500–750
- Revenue per listing a year
- $10K–$15K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
88% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 2.9% of listings are out of stock. The average listing ranks #751 within Weight Loss. It carries 1,544 reviews at 4.57 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 88%
- Prime listings
- 100%
- Out of stock, average day
- 2.9%
- Average rank
- #751in Weight Loss
- Average rating
- 4.57 starsAmazon United States average 4.42 stars
- Average reviews
- 1,544per listing
- Listings tracked
- 16
04 · Newcomers
3 of last year's 3 launches cleared the first-year sales bar.
3 products launched here in the last 12 months. 3 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 63 months on average, so the names here are established.
- Launched, last 12 months
- 3
- Successful launches
- 3Amazon's first-year sales bar
- Average brand age
- 63 months
Products
Top Glycine 3g 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 10, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Pure Encapsulations Glycine - Supports Restful Sleep & Liver Detox* - Liver Supplement - Vegan & Gluten-Free - 180 Capsules
- Price
- $33.21
- Rating
- 4.6/5
- Reviews
- 903
- Age
- 19y ago

THORNE - Glycine - Supports Relaxation Stress Management Detoxification & Healthy Muscle Function* - Amino Acid Supplement - Third-Party Certified - Gluten Dairy & Soy-Free - 250 Capsules
- Price
- $30.06
- Rating
- 4.6/5
- Reviews
- 1,452
- Age
- 18y ago

BulkSupplements.com Glycine Capsules - Amino Acid Supplement 3000mg - Gluten Free 4 Capsules per Serving 360 Count (Pack of 1)
- Price
- $20.81
- Rating
- 4.4/5
- Reviews
- 719
- Age
- 3y ago

Nutricost Glycine Powder 1lb - Non-GMO Gluten Free
- Price
- $21.75
- Rating
- 4.6/5
- Reviews
- 1,555
- Age
- 4y ago

Life Extension Glycine 1000 mg Amino Acid that Promotes Healthy Sleep Gluten-Free Non-GMO Vegetarian 100 Capsules
- Price
- $11.59
- Rating
- 4.6/5
- Reviews
- 3,334
- Age
- 10y ago
Trending
estimated 90-day click momentum
HOLLEGEND Glycine 3g Gummies Organic L-Glycine with NAC Supplements for Sleep & Cellular Support Plus B6 L-Theanine & Taurine for Nerve Liver Detox & Immune Health Sugar Free Vegan 60 Chews
- Price
- $21.66
- Rating
- 4.5/5
- Reviews
- 54
- Age
- 6mo ago

Innate Vitality Glycine Supplements 3000mg per Serving Bioavailable Form Sleep Relax Collagen Glutathione Production Non-GMO Conditionally Essential Amino Acids Vegan 240 Capsules
- Price
- $24.95
- Rating
- 4.9/5
- Reviews
- 44
- Age
- 5mo ago

duwhot Glycine Gummies 3g(3000 mg) Glycine Supplements for Sleep Detox Relax Nerve Support Blueberry Flavor Sugar-Free Vegan Non-GMO Gluten-Free 60 Ct.
- Price
- $20.78
- Rating
- 4.4/5
- Reviews
- 113
- Age
- 8mo ago

Glycine Supplement - 1 000mg Glycine Powder per Serving (300 Capsules) The Relaxing Amino Acid (Glicina) (Third Party Tested Gluten Free Non-GMO) by Double Wood
- Price
- $19.26
- Rating
- 4.6/5
- Reviews
- 1,563
- Age
- 5y ago

Nutricost Glycine Powder 1lb - Non-GMO Gluten Free
- Price
- $21.75
- Rating
- 4.6/5
- Reviews
- 1,555
- Age
- 4y ago
Newest
by launch date
Innate Vitality Glycine Supplements 3000mg per Serving Bioavailable Form Sleep Relax Collagen Glutathione Production Non-GMO Conditionally Essential Amino Acids Vegan 240 Capsules
- Price
- $24.95
- Rating
- 4.9/5
- Reviews
- 44
- Age
- 5mo ago

HOLLEGEND Glycine 3g Gummies Organic L-Glycine with NAC Supplements for Sleep & Cellular Support Plus B6 L-Theanine & Taurine for Nerve Liver Detox & Immune Health Sugar Free Vegan 60 Chews
- Price
- $21.66
- Rating
- 4.5/5
- Reviews
- 54
- Age
- 6mo ago

duwhot Glycine Gummies 3g(3000 mg) Glycine Supplements for Sleep Detox Relax Nerve Support Blueberry Flavor Sugar-Free Vegan Non-GMO Gluten-Free 60 Ct.
- Price
- $20.78
- Rating
- 4.4/5
- Reviews
- 113
- Age
- 8mo ago

Glycine 2 000mg Per Serving 240 Veggie Capsules | Free Form | Double Strength Amino Acids | Restful Sleep and Neurotransmitter Support Supplements | Non-GMO Gluten Free
- Price
- $15.93
- Rating
- 4.5/5
- Reviews
- 245
- Age
- 1y ago
![Puregen Labs Glycine 1000mg [High Potency] 100 Vegetarian Capsules Promotes Healthy Rest | No Harmful Additives | Non-GMO NO Gluten and Dairy -100 Servings](https://m.media-amazon.com/images/I/41L9QWe38BL.jpg)
Puregen Labs Glycine 1000mg [High Potency] 100 Vegetarian Capsules Promotes Healthy Rest | No Harmful Additives | Non-GMO NO Gluten and Dairy -100 Servings
- Price
- $9.89
- Rating
- 4.6/5
- Reviews
- 545
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 69% of clicks. Leaders hold, but buyers still shop past them.
Brands
13 rising
Sellers
31
Est. top-5 brand share
75%
Top 20: 100%
Est. top-5 click share
69%
Top 20: 100%
Open market
17%
- Pure Encapsulations26%
- THORNE16%
- BulkSupplements13%
- NOW Foods11%
- Nutricost9%
- Life Extension8%
- Open — no brand owns it (7 brands, 17%)
Demand
Glycine 3g search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan, Feb, Mar, Dec · busiest ÷ quietest = 3.8×
Reviews and returns
What reviews say buyers love and hate about Glycine 3g
We read the reviews and the return reasons for every product selling here.
“Did not help with sleep”
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.
20 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 Glycine 3g 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









