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.

s-allylcysteine

Worth a look

Shows low returns (0.0%), but a small market ($20K/yr) keeps it on the watch list.

Returns

Incredible0.0%

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

Great4.2★

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

Good5.5%

search→purchase rate — share of searches ending in a sale

Review moat

Okay3,281.13

avg incumbent reviews — the moat a new listing must climb

Brand share

Bad90%

top-5 brand share — brand-locked demand

Competition

Bad90%

top-5 click share — a locked-up shelf

Market size

Bad$20K

$20K/yr · 16K searches

Signals Trending Out of Stock

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

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

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

90%

Top 20: 100%

Open market

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 cysteine6K/yr +395.4%5.2% conv.
s-allylcysteine7K/yr +58.4%4.8% conv.
s-allyl cysteine supplement3K/yr +339.7%4.4% conv.

All 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.

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

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$19.504.5★500 rev

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$27.914.5★936 rev

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$19.754.6★2,389 rev

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$30.222.0★2 rev

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$22.494.4★32 rev

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$30.222 rev

1mo ago

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$27.91936 rev

3mo ago

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$22.4932 rev

6mo ago

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$26.22312 rev

11mo ago

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$19.50500 rev

5y ago

What buyers say about s-allylcysteine

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall20%

“Excellent product”

Value For Money8%

“Fair price”

Advertised Vs Actual Product7%

“As advertise”

Smell6%

“Not stinky at all”

Ease Of Chewing/Swallowing4%

“Easy to swallow”

Vitamin4%

“Great vitamin”

Taste-Overall4%

“no unpleasant taste”

Ingredients-Overall4%

“Good quality ingredients”

Efficiency4%

“Appears to be effective”

Ease Of Use3%

“Easy”

What buyers complain about

Smell17%

“it stinks”

Functionality-Overall8%

“Just started no results yet”

Value For Money8%

“Over priced”

Taste-Overall7%

“Awful taste”

Side Effects4%

“I stopped having this awful headache”

Size-Overall3%

“Bottle seems small”

Dosage3%

“I will not continue to take it”

Quality-Overall2%

“Trash”

Advertised Vs Actual Product2%

“Misleading”

Blood Pressure2%

“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 Product57%

Functionality-Overall29%

Side Effects14%

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.