Is nattokinase profitable to sell on Amazon Germany?

The niche generates €545K/yr across 15 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -10.9%. Flapen's verdict: Worth a look (54/100).

How competitive is the nattokinase niche?

15 brands and 22 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 73% of demand.

What do buyers complain about in nattokinase?

Top complaints mined from reviews: Nebenwirkungen, Reguliert die Verdauung, Inhaltsstoffe – insgesamt. The return rate is 0.1%.

When does demand for nattokinase peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the nattokinase niche?

Listings span €11.31–€26.38; the average listing price is €19.46 (sweet spot $15–$100). The average incumbent carries 436 reviews — the moat a new listing must climb.

nattokinase

Worth a look

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

Returns

Incredible0.1%

return rate — above 5% 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

Signals No Dominant Brand

According to Flapen's Amazon Germany niche tracking, nattokinase is a €545K/yr Amazon Germany market (264K searches/yr). The top 5 brands hold 73% of demand. Verdict: Worth a look — 54/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

nattokinase market data

Units sold / yr: 25K–30K; avg 1,500–2,000/product
Revenue / yr: €487K–€584K; units × avg price
Conversion rate: 10.6%
Avg BSR: #10
Page quality: 0%
Prime: 93%
Sponsored: 93%
Out of stock: 5.1%
Avg brand age: 44 months
Avg seller age: 175 days

Competition & brand share

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

Brands

15 rising

Sellers

Top-5 brand share

73%

Top 20: 100%

Top-5 click share

73%

Top 20: 100%

Open market

19%

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

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -10.9% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top nattokinase search terms

nattokinase149K/yr -9.0%11.2% conv.
nattokinase hochdosiert bio39K/yr -3.9%12.1% conv.
serrapeptase16K/yr +6.2%0.4% conv.
nattokinase 4000 fu12K/yr -23.7%8.6% conv.
nattokinase 2000 fu8K/yr -2.2%16.3% conv.
nattokinase hochdosiert5K/yr -24.5%5.6% conv.
nattokinase kapseln6K/yr +0.0%6.5% conv.
natokinase6K/yr -31.4%7.8% conv.
rapamycin9K/yr -29.4%0.5% conv.
nattokinase hochdosiert bio 600004K/yr -25.2%9.6% conv.

All search terms

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

Top sellers

by 90-day click share

Nattokinase 2000 FU - JAHRESVORRAT - 365 Nattokinase Kapseln je 100mg (20.000 FU/g) - Deutsche Qualitätsmarke - Nattokinase hochdosiert - Natto aus Soja - 100% Vegan - Laborgeprüft - BLATTWERK

Blattwerk360€22.784.7★656 rev

Nattokinase Kapseln Premium - 8 Monate Vorrat 240 Kapseln je 100mg (20.000 FU/g) Hochdosiert - Deutsche Laborprüfung Vegan & Ohne Zusätze

RAIBU€18.334.6★2,232 rev

Green Naturals Nattokinase Hochdosiert: 100 mg 365 Kapseln

GREEN NATURALS€25.724.6★386 rev

natural elements Nattokinase 180 hochdosierte Kapseln je 100mg (20.000 FU/g) ohne Gentechnik vegan ohne unnötige Zusätze in Deutschland produziert & laborgeprüft

natural elements€18.444.6★799 rev

vit4ever Nattokinase - 365 Kapseln à 100 mg (20.000 FU/g) - 12 Monatsvorrat - Hochdosiert - Vegan - GMO-frei - Ohne unerwünschte Zusätze

Vit4ever€22.324.8★876 rev

Newest

by launch date

WAKA Naturals Nattokinase | 365 Kapseln | Jahresvorrat | Hochdosiert 100mg (20.000 FU/g) pro Kapsel | Vegane Kapseln aus Soja-Fermentation

Waka€19.3950 rev

5mo ago

Nutrifair Nattokinase 100mg (20.000 FU/g) 365 Tabletten schluckfreundlich Natto Enzym Hochdosiert 100% Vegan Deutsche Produktion & Laborprüfung

NutriFair€19.5390 rev

11mo ago

Nattokinase mit 4.000 FU pro Kapsel 120 vegane Kapseln Hochdosiert magensaftresistent Ohne Gentechnik aus Soja gewonnen ohne Füllstoffe 4-Monats-Vorrat

pureclinica€19.1626 rev

1y ago

Naturkur Nattokinase 100 mg (20.000 FU/g) - 240 Kapseln im Apothekerglas - Vegan ohne unerwünschte Zusatzstoffe in Handarbeit hergestellt in Unterfranken

Naturkur€19.9834 rev

1y ago

Vegavero€14.56234 rev

2y ago

What buyers say about nattokinase

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”

Common questions

Is nattokinase profitable to sell on Amazon Germany?: The niche generates €545K/yr across 15 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -10.9%. Flapen's verdict: Worth a look (54/100).
How competitive is the nattokinase niche?: 15 brands and 22 sellers compete. The top 5 products take 73% of clicks and top 5 brands hold 73% of demand.
What do buyers complain about in nattokinase?: Top complaints mined from reviews: Nebenwirkungen, Reguliert die Verdauung, Inhaltsstoffe – insgesamt. The return rate is 0.1%.
When does demand for nattokinase peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the nattokinase niche?: Listings span €11.31–€26.38; the average listing price is €19.46 (sweet spot $15–$100). The average incumbent carries 436 reviews — the moat a new listing must climb.