---
title: "Glynac — $31K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/glynac"
last_updated: "2026-08-12T04:26:17.904Z"
locale: en
meta:
description: "Amazon product research for glynac: $31K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for glynac: $31K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Glynac — $31K/mo Amazon US Product Research (2026)"
---
# **Glynac**
**Worth a look**
Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 54Growth 44Conversion 70Competition 38Returns 100Price range 86Avg price 95Brand share 61Review moat 39Quality gap 40
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$25.61**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$10.25–$54.51**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****6.4%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****68%**
top-5 brand share — brands hold most of the demand
**Market size**
**Good****$375K**
$375K/yr · 227K searches
**Growth**
**Okay****+15.3%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,610.2**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****62%**
top-5 click share — leaders hold, buyers still browse
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
## **Is glynac profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, glynac is a $375K/yr Amazon United States market (227K searches/yr). The top 5 brands hold 68% of demand. Demand peaks in Nov. Verdict: Worth a look — 59/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **glynac market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **13K–15K**
- avg 500–750/product
- **Revenue / yr**
- **$320K–$384K**
- units × avg price
- **Conversion rate**
- **6.4%**
- **Avg BSR**
- **#1,574**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **80%**
- **Out of stock**
- **7.0%**
- **Avg brand age**
- **65 months**
- **Avg seller age**
- **165 days**
## **Competition: brands, sellers & click share**
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▲rising
**Sellers**
**43**
**Top-5 brand share**
**68%**
Top 20: 100%
**Top-5 click share**
**62%**
Top 20: 100%
**Open market**
**22%**
- Nutricost16% - Nature's Fusions15% - PRISTINE'S14% - THEREXA12% - Pure Encapsulations11% - Utzy Naturals10%
## **glynac demand & seasonality**
Weekly Amazon search volume, last 99 weeks — +15.3% search growth over the last 90 days.
9K7KSpike '24Black Friday '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Nov · busiest ÷ quietest = 2.3×
[**Open Trend **](https://flapen.com/research/us/health-household/glynac/trend)
## **Top glynac search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **glynac**111K/yr+21.4%5.4% conv. - **glynac supplement**47K/yr+14.2%5.4% conv. - **nac glycine**15K/yr+3.8%5.3% conv. - **glynac powder**9K/yr+9.0%4.4% conv. - **glycine nac**13K/yr-32.0%5.0% conv. - **gly nac**4K/yr+135.7%6.3% conv. - **glynac supplement 1000mg**4K/yr+72.9%6.3% conv. - **nac + glycine**4K/yr+0.2%5.9% conv. - **nac and glycine**5K/yr-5.3%4.5% conv. - **nac with glycine**4K/yr+10.0%3.1% conv. [**All search terms **](https://flapen.com/research/us/health-household/glynac/search-terms)
## **Top glynac 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%4%$15K8%$30K12%$45K16%$60K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 20 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutricost NAC + Glycine Powder (250 Grams) Unflavored Gluten-Free**Nutricost**$21.45**4.4★119 rev](https://www.amazon.com/dp/B0FW18R82G) [2**GlyNAC-ET NAC Supplement N-Acetyl Cysteine Ethyl Ester - 20x More Bioavailable - Glycine & N-Acetylcysteine Ethyl Ester Anti Aging Supplement Boost Glutathione 60 Capsules - Nutri - 3rd Party Tested**Nature's Fusions**$25.31**4.4★462 rev](https://www.amazon.com/dp/B0BBSJNYC3) [3**THEREXA GLYNAC Supplement 1200MG - Glycine & NAC Supplements USA Tested - 90 Capsules**THEREXA**$20.14**4.5★61 rev](https://www.amazon.com/dp/B0G5PTHQ99) [4**GlyNAC Supplement Complex Large Size Tablet 1600MG Glutathione Production - 3rd Party Tested Healthy Aging & Cognitive Support - Glycine & NAC Gluten Free Non GMO USA Made Glass Bottle**PRISTINE'S**$24.13**4.2★83 rev](https://www.amazon.com/dp/B0G452QYHS) [5**Pure Encapsulations NAC + Glycine Powder - Immune Support Detox Cleanse & Glutathione Production* - Conditionally Essential Amino Acids - Gluten Free & Non-GMO - 5.6 oz**Pure Encapsulations**$36.31**4.2★390 rev](https://www.amazon.com/dp/B08WJDLHMJ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**PRISTINES Large Tablet GlyNAC Complex 1600mg Glycine 1000mg + NAC 600mg Supplement Glutathione & Antioxidant Support 120 Large Scored Tablets Vegan Non-GMO Gluten-Free**PRISTINE'S**$24.98**4 rev2mo ago](https://www.amazon.com/dp/B0GZLYHVG9) [**OMRE - Glycine (1000mg) + NAC Supplement (500mg) Amino Acid Formula for Antioxidant Liver & Cellular Health Support Gluten-Free - Glutathione Support**OMRE**$33.80**24 rev5mo ago](https://www.amazon.com/dp/B0GMHT2XZ1) [**THEREXA GLYNAC Supplement 1200MG - Glycine & NAC Supplements USA Tested - 90 Capsules**THEREXA**$20.14**61 rev6mo ago](https://www.amazon.com/dp/B0G5PTHQ99) [**GREABBY Glynac Gummies Glycine & N-Acetyl Cysteine Supplement for Adults with Quercetin Vitamin C & Zinc Liver & Cellular Support Glutathione Production 60 Count**GREABBY**$19.70**34 rev6mo ago](https://www.amazon.com/dp/B0GHR9FHQ8) [**Age Finity NAD+ & NR Cellular Optimization Mitochondrial Supplement - NAD Nicotinamide Riboside TMG CoQ10 GlyNAC Resveratrol Spermidine - Cellular Longevity - 3rd Party Tested Glass Bottle**PRISTINE'S**$25.51**36 rev6mo ago](https://www.amazon.com/dp/B0GD831HTD)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**PRISTINES Large Tablet GlyNAC Complex 1600mg Glycine 1000mg + NAC 600mg Supplement Glutathione & Antioxidant Support 120 Large Scored Tablets Vegan Non-GMO Gluten-Free**PRISTINE'S**$24.98**5.0★**▲ 198%**](https://www.amazon.com/dp/B0GZLYHVG9) [**OMRE - Glycine (1000mg) + NAC Supplement (500mg) Amino Acid Formula for Antioxidant Liver & Cellular Health Support Gluten-Free - Glutathione Support**OMRE**$33.80**4.8★**▲ 184%**](https://www.amazon.com/dp/B0GMHT2XZ1) [**THEREXA GLYNAC Supplement 1200MG - Glycine & NAC Supplements USA Tested - 90 Capsules**THEREXA**$20.14**4.5★**▲ 92%**](https://www.amazon.com/dp/B0G5PTHQ99) [**GREABBY Glynac Gummies Glycine & N-Acetyl Cysteine Supplement for Adults with Quercetin Vitamin C & Zinc Liver & Cellular Support Glutathione Production 60 Count**GREABBY**$19.70**4.6★**▲ 87%**](https://www.amazon.com/dp/B0GHR9FHQ8) [**Age Finity NAD+ & NR Cellular Optimization Mitochondrial Supplement - NAD Nicotinamide Riboside TMG CoQ10 GlyNAC Resveratrol Spermidine - Cellular Longevity - 3rd Party Tested Glass Bottle**PRISTINE'S**$25.51**4.4★**▲ 65%**](https://www.amazon.com/dp/B0GD831HTD)
**~~View all trending →~~**
## **What reviews say buyers love and hate about glynac**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**15%
*“The quality is always consistent”*
**Sleep Quality**14%
*“Better sleep”*
**Value For Money**7%
*“Fair price”*
**Vitamin**5%
*“Good Supplement”*
**Nutritional Content**4%
*“Great nutritional supplements, excellent contents”*
**Ingredients-Overall**3%
*“The ingredients are pure”*
**Dosage**3%
*“Easy to take, right dosage”*
**Side Effects**3%
*“Very pleased with the effects of this product”*
**Taste-Overall**3%
*“No issues with taste”*
**Ease Of Use**2%
*“easy to read”*
### **What buyers complain about **
**Smell**11%
*“it stinks”*
**Sleep Quality**7%
*“this did not help me sleep at all”*
**Taste-Overall**7%
*“Tastes absolutely wretched”*
**Size-Overall**6%
*“Very big size tablets”*
**Functionality-Overall**5%
*“Did not help”*
**Dosage**5%
*“Did not Find it effective in dose of 2,000 mg/ day”*
**Side Effects**4%
*“woke up dizzy headed”*
**Quality-Overall**3%
*“I expect better quality control at this price point”*
**Value For Money**2%
*“Waste of money”*
**Flavor**2%
*“The glycine I've been taking was unflavored-as I assumed all glycine was”*
### **Top return reasons **
**Functionality-Overall**21%
**Advertised Vs Actual Product**17%
**Dosage**13%
**Sleep Quality**8%
**Vitamin**8%
**Product Condition**4%
**Acid Regulator/Stomach Ache Relief**4%
**Side Effects**4%
**Calcium**4%
**Sour**4%
## **Common glynac questions**
- **Is glynac profitable to sell on Amazon United States?**
- The niche generates $375K/yr across 20 tracked products. 4 of 7 products launched in the last 360 days are still selling. 90-day search growth is +15.3%. Flapen's verdict: Worth a look (59/100).
- **How competitive is the glynac niche?**
- 12 brands and 43 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 68% of demand.
- **What do buyers complain about in glynac?**
- Top complaints mined from reviews: Smell, Sleep Quality, Taste-Overall. The return rate is 0.0%.
- **When does demand for glynac peak?**
- Demand peaks in Nov; the busiest month runs 2.3× the quietest.
- **What does it cost to enter the glynac niche?**
- Listings span $10.25–$54.51; the average listing price is $25.61 (sweet spot $15–$100). The average incumbent carries 2,610 reviews — the moat a new listing must climb.
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