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54

nattokinase

Worth a look

Shows low returns (0.1%), but soft demand (-10.9% this quarter) keeps it on the watch list.

Market size 62Growth 20Conversion 89Competition 22Returns 100Price range 75Avg price 86Brand share 53Review moat 78Quality gap 22

Returns

Incredible0.1%

return rate — above 6% kills the launch gate

Conversion

Great10.6%

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

Avg price

Great€19.46

avg listing price — sweet spot $15–$100

Review moat

Great436.2

avg incumbent reviews — the moat a new listing must climb

Price range

Great€11.31–€26.38

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

Market size

Good€545K

€545K/yr · 264K searches

Brand share

Good73%

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

Competition

Bad73%

top-5 click share — a locked-up shelf

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Growth

Bad-10.9%

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

15 rising

Sellers

22

Top-5 brand share

73%

Open market

19%

  • Blattwerk36020%
  • RAIBU17%
  • GREEN NATURALS14%
  • natural elements12%
  • Vit4ever10%
  • QIDOSHA8%

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%5%€27K10%€54K15%€82K20%€109K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -10.9% search growth over the last 90 days.
6K4KPrime Day '24Spike '24Prime Day '25Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Reviews

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

What buyers love

Qualität insgesamt24%

“Super Produkt”

Preis-Leistungs-Verhältnis11%

“Preis/Leistung ok”

Dosierung7%

“gute Qualität und Dosierung”

beworben Vs Tatsächliches Produkt6%

“Macht, was es soll”

Herzgesundheit5%

“Herzgesundheit”

Vegan/Biologisch5%

“Green Naturals”

Einfaches Kauen/Schlucken4%

“sich problemlos schlucken”

Blutdruck4%

“Nach nun fast 3 Monatiger Einnahme haben sich Ihre Blutdruckwerte deutlich gebessert”

Inhaltsstoffe – insgesamt3%

“WAKA Naturals Nattokinase 2000 FU”

Benutzerfreundlichkeit3%

“Nutzung unkompliziert.”

What buyers complain about

Nebenwirkungen9%

“Die wesentliche Wirkung entfällt”

Reguliert die Verdauung7%

“Naja, erzeugt gastrointestinale Symptome”

Inhaltsstoffe – insgesamt7%

“Rezeptur geändert”

Qualität insgesamt6%

“online einzukaufen: Ich hab zu viel über schlechte Qualität von Produkten aus weit entfernten Ländern gelesen,”

Blutdruck6%

“Der Blutdruck sinkt jedoch nicht erheblich”

Gesamtgröße5%

“Die Kapseln sind ziemlich klein”

Geruch5%

“Erste Bestellung roch nach Natto”

Dosierung5%

“100mg effektiv entsprechen.”

Hustenlinderung4%

“Ich leide untem Asthma”

Haltbarkeit4%

“Kurze Haltbarkeit dieser Ware”