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corydalis

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Soft demand (-43.6% this quarter) — this niche doesn't clear our bar today.

Market size 13Growth 3Conversion 66Competition 23Returns 99Price range 84Avg price 95Brand share 43Review moat 85Quality gap 70

Returns

Incredible0.2%

return rate — above 6% kills the launch gate

Avg price

Incredible$26.93

avg listing price — sweet spot $15–$100

Review moat

Great296.46

avg incumbent reviews — the moat a new listing must climb

Price range

Great$10.38–$43.72

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Conversion

Good5.9%

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

Brand share

Okay79%

top-5 brand share — brands hold most of the demand

Competition

Bad73%

top-5 click share — a locked-up shelf

Market size

Bad$50K

$50K/yr · 32K searches

Growth

Bad-43.6%

90-day search growth — must beat 0% to launch

Competition

The top 5 products capture 73% of clicks — a locked-up shelf that new listings rarely crack.

Brands

11 falling

Sellers

19

Top-5 brand share

79%

Open market

15%

  • Parker Naturals25%
  • NusaPure23%
  • Biotech Nutritions15%
  • Herb Pharm10%
  • Swanson6%
  • Health Concerns6%
  • Open — no brand owns it (5 brands, 15%)

Product shelf

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%$5K20%$10K30%$15K40%$20K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 13 tracked products in this niche — three views at once, no toggling.

Demand

Weekly Amazon search volume, last 23 weeks — -43.6% search growth over the last 90 days.
1K600Spike '26Feb '26Feb '26Mar '26Apr '26Apr '26May '26Jun '26Jun '26

Reviews

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

What buyers love

Value For Money23%

“Because it work the value for the money was good”

Quality-Overall20%

“Quality product”

Efficiency15%

“It works fair”

Inflammation10%

“Very effective for inflammation”

Vitamin10%

“I take magnolia supplements which are very good”

Durability8%

“it seems to stay good all through the day”

Soothing Effect4%

“it does dull the pain well”

Sleep Quality4%

“It helps me sleep too”

Focus Enhancement3%

“The effects focusing on inflammation is amazing”

What buyers complain about

Taste-Overall25%

“Worst taste EVER”

Ease Of Use25%

“its harder to fight it”

Pain Relief-Overall19%

“Doesnt do anything for pain at all”

Functionality-Overall13%

“Doesnt work”

Value For Money6%

“so cant say value v cost”

Top return reasons

Certifications33%
Advertised Vs Actual Product33%
Functionality-Overall17%
Pain Relief-Overall17%