---
title: "S-allylcysteine — $20K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/s-allylcysteine"
last_updated: "2026-08-06T05:10:39.909Z"
locale: en
meta:
description: "Niche score 53/100 · $20K/yr market · 16K searches/yr · $21.51 avg price. A small market ($20K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · $20K/yr market · 16K searches/yr · $21.51 avg price. A small market ($20K/yr) keeps it on the watch list. Data updated Jul 2026."
"og:title": "S-allylcysteine — $20K/yr Amazon US Niche (2026) - Flapen"
---
# **s-allylcysteine**
**Worth a look**
Shows low returns (0.0%), but a small market ($20K/yr) keeps it on the watch list.
Market size 5Growth 97Conversion 63Competition 8Returns 100Price range 76Avg price 91Brand share 25Review moat 32Quality gap 82
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Growth**
**Incredible****+178.9%**
90-day search growth — must beat 0% to launch
**Avg price**
**Great****$21.51**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Price range**
**Great****$10.25–$30.22**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****5.5%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Okay****3,281.13**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****90%**
top-5 brand share — brand-locked demand
**Competition**
**Bad****90%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$20K**
$20K/yr · 16K searches
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United States niche tracking, s-allylcysteine is a $20K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 90% of demand. Verdict: Worth a look — 53/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **s-allylcysteine market data**
- **Units sold / yr**
- **750–1K**
- avg 100–250/product
- **Revenue / yr**
- **$16K–$22K**
- units × avg price
- **Conversion rate**
- **5.5%**
- **Avg BSR**
- **#57**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **10.3%**
- **Avg brand age**
- **61 months**
- **Avg seller age**
- **187 days**
## **Competition & brand share**
The top 5 products capture 90% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▲rising
**Sellers**
**24**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**90%**
Top 20: 100%
**Open market**
**6%**
- Peak Performance36% - Resilia Oil Of Oregano24% - Dr. Mercola20% - VivaMelhor6% - LanranBee5% - JXSVR4% - Open — no brand owns it (2 brands, 6%)
## **Top s-allylcysteine search terms**
- **s-allyl cysteine**6K/yr+395.4%5.2% conv. - **s-allylcysteine**7K/yr+58.4%4.8% conv. - **s-allyl cysteine supplement**3K/yr+339.7%4.4% conv. [**All search terms **](https://flapen.com/research/us/health-household/s-allylcysteine/search-terms)
## **Top s-allylcysteine products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$2K20%$4K30%$6K40%$8K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Peak Performance Aged Black Garlic Capsules. Raw Vegan Pure Odorless Extract Supplement Pills for Cholesterol and Immune Support. from Garlic Bulb with S-Allyl Cysteine and Antioxidants**Peak Performance**$19.50**4.5★500 rev](https://www.amazon.com/dp/B08C6YB78D) [2**Resilia Odorless Aged Garlic Extract Softgels (60 Count) | 600mg Aged Garlic Extract Per Serving | with CoQ10 Ubiquinol & Vitamin K2 (MK-7) | Dietary Supplement**Resilia Oil Of Oregano**$27.91**4.5★936 rev](https://www.amazon.com/dp/B0GWRZSRH7) [3**Dr. Mercola Fermented Black Garlic - Antioxidant Supplement - for Immune Cellular & Heart Health Support - Includes S-Allyl-Cysteine - Non-GMO Gluten-Free & Soy-Free - 60 Capsules (30 Servings)**Dr. Mercola**$19.75**4.6★2,389 rev](https://www.amazon.com/dp/B01MRBMQKN) [4**estella Fermented Black Garlic Extract Capsules 90-Day Matured with S-Allyl Cysteine Odorless Garlic Supplement for Daily Digestive Balance Immune & Antioxidant Support Vegan 300 Capsules**VivaMelhor**$30.22**2.0★2 rev](https://www.amazon.com/dp/B0H41SQ876) [5**Aged Garlic Extract 750mg Softgels Odorless Garlic Supplement Standardized for S-Allyl Cysteine (SAC) 24-Month Matured Formula Daily Wellness & Immune Support 300 Softgels (150-Day Supply)**LanranBee**$22.49**4.4★32 rev](https://www.amazon.com/dp/B0GHNKGYDS)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**estella Fermented Black Garlic Extract Capsules 90-Day Matured with S-Allyl Cysteine Odorless Garlic Supplement for Daily Digestive Balance Immune & Antioxidant Support Vegan 300 Capsules**VivaMelhor**$30.22**2 rev1mo ago](https://www.amazon.com/dp/B0H41SQ876) [**Resilia Odorless Aged Garlic Extract Softgels (60 Count) | 600mg Aged Garlic Extract Per Serving | with CoQ10 Ubiquinol & Vitamin K2 (MK-7) | Dietary Supplement**Resilia Oil Of Oregano**$27.91**936 rev3mo ago](https://www.amazon.com/dp/B0GWRZSRH7) [**Aged Garlic Extract 750mg Softgels Odorless Garlic Supplement Standardized for S-Allyl Cysteine (SAC) 24-Month Matured Formula Daily Wellness & Immune Support 300 Softgels (150-Day Supply)**LanranBee**$22.49**32 rev6mo ago](https://www.amazon.com/dp/B0GHNKGYDS) [**Aged Garlic Extract 300 Softgels Odorless Garlic Supplements 15:1 Extract Formula 2 Years Aged Matured Standardized for S-Allyl Cysteine | Heart & Immune Antioxidant Supplements All-Natural (1)**JXSVR**$26.22**312 rev11mo ago](https://www.amazon.com/dp/B0FN849M6Z) [**Peak Performance Aged Black Garlic Capsules. Raw Vegan Pure Odorless Extract Supplement Pills for Cholesterol and Immune Support. from Garlic Bulb with S-Allyl Cysteine and Antioxidants**Peak Performance**$19.50**500 rev5y ago](https://www.amazon.com/dp/B08C6YB78D)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Aged Garlic Extract 750mg Softgels Odorless Garlic Supplement Standardized for S-Allyl Cysteine (SAC) 24-Month Matured Formula Daily Wellness & Immune Support 300 Softgels (150-Day Supply)**LanranBee**$22.49**4.4★**▲ 32%**](https://www.amazon.com/dp/B0GHNKGYDS) [**estella Fermented Black Garlic Extract Capsules 90-Day Matured with S-Allyl Cysteine Odorless Garlic Supplement for Daily Digestive Balance Immune & Antioxidant Support Vegan 300 Capsules**VivaMelhor**$30.22**2.0★**▲ 32%**](https://www.amazon.com/dp/B0H41SQ876) [**Resilia Odorless Aged Garlic Extract Softgels (60 Count) | 600mg Aged Garlic Extract Per Serving | with CoQ10 Ubiquinol & Vitamin K2 (MK-7) | Dietary Supplement**Resilia Oil Of Oregano**$27.91**4.5★**▲ 32%**](https://www.amazon.com/dp/B0GWRZSRH7) [**Aged Garlic Extract 300 Softgels Odorless Garlic Supplements 15:1 Extract Formula 2 Years Aged Matured Standardized for S-Allyl Cysteine | Heart & Immune Antioxidant Supplements All-Natural (1)**JXSVR**$26.22**4.4★**▲ 31%**](https://www.amazon.com/dp/B0FN849M6Z) [**Life Extension N-Acetyl-L-Cysteine (NAC) Immune Respiratory Liver Health NAC 600 mg Potent antioxidant Support Free-radicals Easy to Absorb 60 Capsules**Life Extension**$10.25**4.6★**— 4%**](https://www.amazon.com/dp/B008ML8D4O)
**~~View all trending →~~**
## **What buyers say about s-allylcysteine**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“Excellent product”*
**Value For Money**8%
*“Fair price”*
**Advertised Vs Actual Product**7%
*“As advertise”*
**Smell**6%
*“Not stinky at all”*
**Ease Of Chewing/Swallowing**4%
*“Easy to swallow”*
**Vitamin**4%
*“Great vitamin”*
**Taste-Overall**4%
*“no unpleasant taste”*
**Ingredients-Overall**4%
*“Good quality ingredients”*
**Efficiency**4%
*“Appears to be effective”*
**Ease Of Use**3%
*“Easy”*
### **What buyers complain about **
**Smell**17%
*“it stinks”*
**Functionality-Overall**8%
*“Just started no results yet”*
**Value For Money**8%
*“Over priced”*
**Taste-Overall**7%
*“Awful taste”*
**Side Effects**4%
*“I stopped having this awful headache”*
**Size-Overall**3%
*“Bottle seems small”*
**Dosage**3%
*“I will not continue to take it”*
**Quality-Overall**2%
*“Trash”*
**Advertised Vs Actual Product**2%
*“Misleading”*
**Blood Pressure**2%
*“Unfortunately, my BP has risen slightly, I have one more month of these pills and will see if there is any change”*
### **Top return reasons **
**Advertised Vs Actual Product**57%
**Functionality-Overall**29%
**Side Effects**14%
## **Common questions**
- **Is s-allylcysteine profitable to sell on Amazon United States?**
- The niche generates $20K/yr across 8 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is +178.9%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the s-allylcysteine niche?**
- 8 brands and 24 sellers compete. The top 5 products take 90% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in s-allylcysteine?**
- Top complaints mined from reviews: Smell, Functionality-Overall, Value For Money. The return rate is 0.0%.
- **What does it cost to enter the s-allylcysteine niche?**
- Listings span $10.25–$30.22; the average listing price is $21.51 (sweet spot $15–$100). The average incumbent carries 3,281 reviews — the moat a new listing must climb.
## **Related niches in Health & Household**
- 76 [**graduation plates**](https://flapen.com/research/us/health-household/graduation-plates)$505K/yr+576.3%**Worth a look**- 77 [**dexcom g7**](https://flapen.com/research/us/health-household/dexcom-g7)$2.0M/yr+39.9%**Launch it**- 77 [**purelia**](https://flapen.com/research/us/health-household/purelia)$635K/yr+359.7%**Worth a look**- 77 [**credit card wand**](https://flapen.com/research/us/health-household/credit-card-wand)$418K/yr+101.3%**Worth a look**- 77 [**belano pumpkin seed oil**](https://flapen.com/research/us/health-household/belano-pumpkin-seed-oil)$713K/yr+238.3%**Worth a look**- 77 [**nutrapure glp1 cutting mix**](https://flapen.com/research/us/health-household/nutrapure-glp1-cutting-mix)$149K/yr+940.2%**Worth a look**[**All Health & Household niches **](https://flapen.com/research/us/health-household)