---
title: "Nattokinase — £363K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/nattokinase"
last_updated: "2026-07-31T18:28:48.542Z"
locale: en
meta:
description: "Niche score 56/100 · £363K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · £363K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Nattokinase — £363K/yr Amazon UK Niche (2026) - Flapen"
---
# **nattokinase**
**Worth a look**
Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 54Growth 49Conversion 83Competition 14Returns 100Price range 80Avg price 84Brand share 30Review moat 82Quality gap 45
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****£18.43**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****9.0%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Great****363.73**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Great****£5.69–£55.46**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****£363K**
£363K/yr · 219K searches
**Growth**
**Okay****+19.2%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****87%**
top-5 brand share — brands hold most of the demand
**Competition**
**Bad****83%**
top-5 click share — a locked-up shelf
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United Kingdom niche tracking, nattokinase is a £363K/yr Amazon United Kingdom market (219K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in May–Jun. Verdict: Worth a look — 56/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **nattokinase market data**
- **Units sold / yr**
- **25K–30K**
- avg 2,000–2,500/product
- **Revenue / yr**
- **£461K–£553K**
- units × avg price
- **Conversion rate**
- **9.0%**
- **Avg BSR**
- **#41**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **91%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **36 months**
- **Avg seller age**
- **172 days**
## **Competition & brand share**
The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**10 **▼falling
**Sellers**
**10**
**Top-5 brand share**
**87%**
Top 20: 100%
**Top-5 click share**
**83%**
Top 20: 100%
**Open market**
**10%**
- Hybrid Health36% - Natural Foundation22% - Vinco Supplements15% - RAIBU11% - AuranC-H3% - ECO-VITS3% - Open — no brand owns it (4 brands, 10%)
## **Demand & seasonality**
Weekly Amazon search volume, last 103 weeks — +19.2% search growth over the last 90 days.
7K5KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: May, Jun · busiest ÷ quietest = 2.1×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/nattokinase/trend)
## **Top nattokinase search terms**
- **nattokinase**150K/yr+21.5%9.7% conv. - **nattokinase organic uk**32K/yr+3.7%7.9% conv. - **nattokinase high strength**14K/yr+30.7%9.9% conv. - **nattokinase enzyme nutritional supplements**15K/yr-2.4%4.6% conv. - **nattokinase 10000 fu**4K/yr+139.0%5.5% conv. - **nattokinase uk**4K/yr-10.8%6.3% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/nattokinase/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.
0%10%£36K20%£73K30%£109K40%£145K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Hybrid Health Nattokinase 5000FU 250mg Supplement - 180 Vegan Capsules High Strength Japanese Natto Independently Third Party Lab Tested 3 Months Supply**Hybrid Health**£8.21**4.4★414 rev](https://www.amazon.co.uk/dp/B0DKGB799M) [2**Nattokinase 5000 FU Capsules with Oregano & Motherwort | 3 Ingredient Formula for Arterial Support | 3rd Party Tested with Certificate of Analysis | Vegan | UK GMP Made | 30 Capsules (30)**Natural Foundation**£27.74**4.4★121 rev](https://www.amazon.co.uk/dp/B0FGY5Z3Y9) [3**Vinco Nattokinase 200mg 4000FU 120 Capsules High Strength Japanese Natto Enzyme Supports Heart Health Blood Flow Circulation and Blood Pressure Non-GMO Gluten Free Made in UK**Vinco Supplements**£7.99**4.4★505 rev](https://www.amazon.co.uk/dp/B0DKZ12K4N) [4**Nattokinase 2 000 FU per Capsule - High-Strength 240 Nattokinase Capsules from Fermented Natto Soybeans - 8 Months Supply - Non-GMO Natural & Vegan- Laboratory Tested - Raibu**RAIBU**£16.01**4.4★2,235 rev](https://www.amazon.co.uk/dp/B09SWGZ2Y5) [5**Nattokinase 10 000 FU per 3 Capsules - High-Strength 240 Nattokinase Capsules from Fermented Natto Soybeans with CoQ10 Turmeric Aged Garlic & Pine Bark Extract - 80-Day Supply**AuranC-H**£22.97**4.7★5 rev](https://www.amazon.co.uk/dp/B0GWCRH9R7)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nattokinase 10 000 FU per 3 Capsules - High-Strength 240 Nattokinase Capsules from Fermented Natto Soybeans with CoQ10 Turmeric Aged Garlic & Pine Bark Extract - 80-Day Supply**AuranC-H**£22.97**5 rev3mo ago](https://www.amazon.co.uk/dp/B0GWCRH9R7) [**Nattokinase 5000 FU Capsules with Oregano & Motherwort | 3 Ingredient Formula for Arterial Support | 3rd Party Tested with Certificate of Analysis | Vegan | UK GMP Made | 90 Capsules (90)**Natural Foundation**£55.46**121 rev7mo ago](https://www.amazon.co.uk/dp/B0G8JG7KXX) [**Nattokinase 60 Capsules | 500 MG 6000 FU Per Capsule | 100% Natural Vegan | Protein Enzyme from Japanese Natto | New & Improved Formula | NEO NUTRITION**NEO-NUTRITION**£8.14**12 rev11mo ago](https://www.amazon.co.uk/dp/B0FKG2M911) [**Nattokinase 5000 FU Capsules with Oregano & Motherwort | 3 Ingredient Formula for Arterial Support | 3rd Party Tested with Certificate of Analysis | Vegan | UK GMP Made | 30 Capsules (30)**Natural Foundation**£27.74**121 rev1y ago](https://www.amazon.co.uk/dp/B0FGY5Z3Y9) [**Vinco Nattokinase 200mg 4000FU 120 Capsules High Strength Japanese Natto Enzyme Supports Heart Health Blood Flow Circulation and Blood Pressure Non-GMO Gluten Free Made in UK**Vinco Supplements**£7.99**505 rev1y ago](https://www.amazon.co.uk/dp/B0DKZ12K4N)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nattokinase 5000 FU Capsules with Oregano & Motherwort | 3 Ingredient Formula for Arterial Support | 3rd Party Tested with Certificate of Analysis | Vegan | UK GMP Made | 90 Capsules (90)**Natural Foundation**£55.46**4.4★**▲ 202%**](https://www.amazon.co.uk/dp/B0G8JG7KXX) [**Nattokinase 10 000 FU per 3 Capsules - High-Strength 240 Nattokinase Capsules from Fermented Natto Soybeans with CoQ10 Turmeric Aged Garlic & Pine Bark Extract - 80-Day Supply**AuranC-H**£22.97**4.7★**▲ 200%**](https://www.amazon.co.uk/dp/B0GWCRH9R7) [**Vitabay Nattokinase 2 000 FU High Strength 180 Vegan Softgel Capsules Liposomal Nattokinase from Fermented Soy No Vitamin K2 No Additives & Lab Tested 6 Month Supply**vitabay**£15.87**4.6★**▲ 85%**](https://www.amazon.co.uk/dp/B0CSDX3Y7Y) [**Nattokinase 60 Capsules | 500 MG 6000 FU Per Capsule | 100% Natural Vegan | Protein Enzyme from Japanese Natto | New & Improved Formula | NEO NUTRITION**NEO-NUTRITION**£8.14**4.3★**▲ 32%**](https://www.amazon.co.uk/dp/B0FKG2M911) [**Hybrid Health Nattokinase 5000FU 250mg Supplement - 180 Vegan Capsules High Strength Japanese Natto Independently Third Party Lab Tested 3 Months Supply**Hybrid Health**£8.21**4.4★**▲ 27%**](https://www.amazon.co.uk/dp/B0DKGB799M)
**~~View all trending →~~**
## **What buyers say about nattokinase**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**21%
*“Seem good quality and the delivery was fast and efficient”*
**Blood Pressure**12%
*“Brilliant for blood pressure”*
**Value For Money**10%
*“Good price”*
**Advertised Vs Actual Product**7%
*“Product as advertised”*
**Side Effects**6%
*“Noticing some positive effects 3 months in”*
**Ease Of Chewing/Swallowing**6%
*“so the ease of use for those with problems with swallowing is high”*
**Efficiency**5%
*“The best Nattokinase on the market works well”*
**Heart Health**5%
*“Good for the heart”*
**Dosage**3%
*“Good price for 240 capsules of 2000 FU strength”*
**Vitamin**3%
*“Effectiveness of the suplement”*
### **What buyers complain about **
**Dosage**27%
*“Under dosed”*
**Value For Money**9%
*“Very expensive”*
**Blood Pressure**8%
*“Do not stop taken blood pressure tablets”*
**Advertised Vs Actual Product**7%
*“It's deeply deceptive”*
**Functionality-Overall**6%
*“Dont seem to make any difference”*
**Vitamin**3%
*“The only downside is that like many supplements in this category”*
**Allergies**2%
*“Allergic reaction and filthy”*
**Accuracy-Overall**2%
*“Lab tested results are terrible”*
**Tooth Sensitivity**2%
*“It caused gum bleeding”*
**Heart Health**2%
*“People buy it who have heart problems”*
## **Common questions**
- **Is nattokinase profitable to sell on Amazon United Kingdom?**
- The niche generates £363K/yr across 11 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is +19.2%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the nattokinase niche?**
- 10 brands and 10 sellers compete. The top 5 products take 83% of clicks and top 5 brands hold 87% of demand.
- **What do buyers complain about in nattokinase?**
- Top complaints mined from reviews: Dosage, Value For Money, Blood Pressure. The return rate is 0.0%.
- **When does demand for nattokinase peak?**
- Demand peaks in May–Jun; the busiest month runs 2.1× the quietest.
- **What does it cost to enter the nattokinase niche?**
- Listings span £5.69–£55.46; the average listing price is £18.43 (sweet spot $15–$100). The average incumbent carries 364 reviews — the moat a new listing must climb.
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