---
title: "Nattokinase — $472K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/nattokinase"
last_updated: "2026-08-12T11:05:02.646Z"
locale: en
meta:
description: "Amazon product research for nattokinase: $472K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for nattokinase: $472K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Nattokinase — $472K/mo Amazon US Product Research (2026)"
---
# **Nattokinase**
**Launch it**
A $5.7M/yr market growing +7.2% this quarter with returns at 0.0% — clears our launch bar.
Market size 98Growth 34Conversion 85Competition 73Returns 100Price range 89Avg price 95Brand share 81Review moat 51Quality gap 40
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$5.7M**
$5.7M/yr · 2.1M searches
**Avg price**
**Incredible****$28.04**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.57–$80.03**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****9.5%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Great****54%**
top-5 brand share — no brand owns this niche
**Competition**
**Good****41%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Good****1,445.86**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+7.2%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
## **Is nattokinase profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, nattokinase is a $5.7M/yr Amazon United States market (2.1M searches/yr). The top 5 brands hold 54% of demand. Demand peaks in Mar–Apr–May. Verdict: Launch it — 73/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **nattokinase market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **200K–250K**
- avg 6,000–8,000/product
- **Revenue / yr**
- **$5.6M–$7.0M**
- units × avg price
- **Conversion rate**
- **9.5%**
- **Avg BSR**
- **#700**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **94%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **56 months**
- **Avg seller age**
- **149 days**
## **Competition: brands, sellers & click share**
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**27 **▲rising
**Sellers**
**62**
**Top-5 brand share**
**54%**
Top 20: 94%
**Top-5 click share**
**41%**
Top 20: 86%
**Open market**
**41%**
- Double Wood Supplements19% - Micro Ingredients12% - Nutricost10% - Doctor's BEST8% - Luma Nutrition5% - MEGNETA5%
## **nattokinase demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +7.2% search growth over the last 90 days.
80K60KSpike '24Holiday '24Prime Day '25Spike '25Black Friday '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar, Apr, May · busiest ÷ quietest = 2.2×
[**Open Trend **](https://flapen.com/research/us/health-household/nattokinase/trend)
## **Top nattokinase search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **nattokinase**1.2M/yr+34.1%8.1% conv. - **nattokinase supplement**483K/yr-40.5%7.9% conv. - **nattokinase 10000 fu**120K/yr-17.1%6.5% conv. - **nattokinase 12000 fu**35K/yr+91.0%5.1% conv. - **nattokinase 4000 fu**74K/yr+7.0%11.1% conv. - **nattokinase supplement organic**78K/yr-37.1%4.9% conv. - **nattokinase 2000 fu**39K/yr+17.6%9.6% conv. - **nattokinase organic**22K/yr+55.6%3.7% conv. - **organic nattokinase**20K/yr+17.8%1.6% conv. - **doctors best nattokinase**14K/yr+9.0%14.5% conv. [**All search terms **](https://flapen.com/research/us/health-household/nattokinase/search-terms)
## **Top nattokinase products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%4%$227K8%$453K12%$680K16%$907K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nattokinase Supplement 4 000 FU Servings 120 Capsules (Derived from Japanese Natto) Systemic Enzymes for Cardiovascular and Circulatory Support by Double Wood**Double Wood Supplements**$18.99**4.6★3,538 rev](https://www.amazon.com/dp/B0B6CQ9ZVJ) [2**Nutricost Nattokinase 2 000FU 120 Capsules - Gluten Free Non-GMO Vegetarian Friendly**Nutricost**$14.61**4.7★2,590 rev](https://www.amazon.com/dp/B09LRLLGCZ) [3**Micro Ingredients Nattokinase 10 000 FU Per Serving (Natural Natto Extract) 240 Vegetarian Capsules | with CoQ10 Turmeric Aged Garlic & Pine Bark Extract | Non-GMO Lab Tested cGMP Manufactured**Micro Ingredients**$29.60**4.4★175 rev](https://www.amazon.com/dp/B0G2N6TFRD) [4**Nattokinase Supplement 4 000 FU Servings 240 Capsules (Derived from Japanese Natto) Systemic Enzymes for Cardiovascular and Circulatory Support by Double Wood**Double Wood Supplements**$33.05**4.6★3,538 rev](https://www.amazon.com/dp/B0FK6YGMYT) [5**Micro Ingredients Nattokinase 240 Softgels 200mg (4 000 FU) Per Serving | 7-in-1 Nattokinase Supplement with CoQ10 Bromelain Turmeric Ginger Olive Leaf & White Willow Bark | Non-GMO**Micro Ingredients**$28.70**4.6★517 rev](https://www.amazon.com/dp/B0F5MHP4Q8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Ultimate Nattokinase 10800 FU Supplement Natural Support for Circulation & Cardiovascular Health Odorless Fermented Soy Enzyme Easy Daily Routine 60 Capsules**zdiwond**$35.22**129 rev4mo ago](https://www.amazon.com/dp/B0GQYWKCXX) [**MEGNETA Nattokinase Supplement 12 000 FU with Serrapeptase 360 000 sPU Lumbrokinase 10 000 FUV & CoQ10 Multi-Enzyme Formula for Daily Circulatory Digestive & Antioxidant Wellness 100 Capsules**MEGNETA**$48.50**144 rev5mo ago](https://www.amazon.com/dp/B0FJ2BS3Q8) [**Micro Ingredients Nattokinase 10 000 FU Per Serving (Natural Natto Extract) 240 Vegetarian Capsules | with CoQ10 Turmeric Aged Garlic & Pine Bark Extract | Non-GMO Lab Tested cGMP Manufactured**Micro Ingredients**$29.60**175 rev8mo ago](https://www.amazon.com/dp/B0G2N6TFRD) [**Nattokinase Supplement 4 000 FU Servings 240 Capsules (Derived from Japanese Natto) Systemic Enzymes for Cardiovascular and Circulatory Support by Double Wood**Double Wood Supplements**$33.05**3,538 rev12mo ago](https://www.amazon.com/dp/B0FK6YGMYT) [**Gyumolics Nattokinase Supplement 10000FU with Organic Nattokinase Serrapeptase Bromelain Curcumin Vitamin E & Ginseng Movement Comfort 90 Capsules**Gyumolics**$20.63**467 rev1y ago](https://www.amazon.com/dp/B0FJM3QZSR)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Micro Ingredients Nattokinase 10 000 FU Per Serving (Natural Natto Extract) 240 Vegetarian Capsules | with CoQ10 Turmeric Aged Garlic & Pine Bark Extract | Non-GMO Lab Tested cGMP Manufactured**Micro Ingredients**$29.60**4.4★**▲ 117%**](https://www.amazon.com/dp/B0G2N6TFRD) [**MEGNETA Nattokinase Supplement 12 000 FU with Serrapeptase 360 000 sPU Lumbrokinase 10 000 FUV & CoQ10 Multi-Enzyme Formula for Daily Circulatory Digestive & Antioxidant Wellness 100 Capsules**MEGNETA**$48.50**4.1★**▲ 115%**](https://www.amazon.com/dp/B0FJ2BS3Q8) [**Nattokinase Supplement 4 000 FU Servings 240 Capsules (Derived from Japanese Natto) Systemic Enzymes for Cardiovascular and Circulatory Support by Double Wood**Double Wood Supplements**$33.05**4.6★**▲ 78%**](https://www.amazon.com/dp/B0FK6YGMYT) [**BulkSupplements.com Nattokinase 4000 FU Capsules - Nattokinase Supplement Sourced from Natto Extract Nattokinase 100mg - Gluten Free 1 Capsule per Serving 120 Capsules (Pack of 1)**BulkSupplements**$21.61**4.4★**▲ 65%**](https://www.amazon.com/dp/B0CYR58NBF) [**Ultimate Nattokinase 10800 FU Supplement Natural Support for Circulation & Cardiovascular Health Odorless Fermented Soy Enzyme Easy Daily Routine 60 Capsules**zdiwond**$35.22**4.1★**▲ 53%**](https://www.amazon.com/dp/B0GQYWKCXX)
**~~View all trending →~~**
## **What reviews say buyers love and hate about nattokinase**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Excellent Product”*
**Heart Health**8%
*“Lowered cholesterol”*
**Value For Money**7%
*“Great deal”*
**Advertised Vs Actual Product**6%
*“AS DESCRIBED”*
**Vitamin**6%
*“it boosts the vitamins So they can absorb faster”*
**Blood Pressure**5%
*“Great for my blood pressure”*
**Ease Of Chewing/Swallowing**4%
*“Easy swallow, appears to be as advertised”*
**Efficiency**4%
*“Effective”*
**Dosage**4%
*“effective dosage”*
**Side Effects**4%
*“it doesnt give me any side effects I really recommend this product I would been buying this product again”*
### **What buyers complain about **
**Dosage**10%
*“Wrong dosage listed”*
**Ingredients-Overall**7%
*“Misleading ingredients”*
**Value For Money**6%
*“Price too high”*
**Blood Pressure**5%
*“it makes my blood pressure go really high”*
**Heart Health**5%
*“My cholesterol. bad”*
**Functionality-Overall**4%
*“Not effective”*
**Advertised Vs Actual Product**4%
*“Completely misleading”*
**Side Effects**3%
*“Absolutely horrible intestinal pain that almost had me throwing up”*
**Quality-Overall**3%
*“Bad quality control”*
**Certifications**2%
*“The seller does not provide a certificate of analysis”*
### **Top return reasons **
**Side Effects**31%
**Value For Money**15%
**Leak-Proof**8%
**Fever Relief**8%
**Thin**8%
**Blood Pressure**8%
**Joint Pain**8%
**Certifications**8%
**Ingredients-Overall**4%
**Advertised Vs Actual Product**4%
## **Common nattokinase questions**
- **Is nattokinase profitable to sell on Amazon United States?**
- The niche generates $5.7M/yr across 35 tracked products. 7 of 7 products launched in the last 360 days are still selling. 90-day search growth is +7.2%. Flapen's verdict: Launch it (73/100).
- **How competitive is the nattokinase niche?**
- 27 brands and 62 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 54% of demand.
- **What do buyers complain about in nattokinase?**
- Top complaints mined from reviews: Dosage, Ingredients-Overall, Value For Money. The return rate is 0.0%.
- **When does demand for nattokinase peak?**
- Demand peaks in Mar–Apr–May; the busiest month runs 2.2× the quietest.
- **What does it cost to enter the nattokinase niche?**
- Listings span $9.57–$80.03; the average listing price is $28.04 (sweet spot $15–$100). The average incumbent carries 1,446 reviews — the moat a new listing must climb.
## **Related niches to research next**
Same-category niches scoring near this one — the next ones worth researching.
- 76 [**cedar oil**](https://flapen.com/research/us/health-household/cedar-oil)$1.2M/yr+214.4%**Launch it**- 77 [**nutrapure glp1 cutting mix**](https://flapen.com/research/us/health-household/nutrapure-glp1-cutting-mix)$149K/yr+940.2%**Worth a look**- 77 [**dexcom g7**](https://flapen.com/research/us/health-household/dexcom-g7)$2.0M/yr+39.9%**Launch it**- 77 [**purelia**](https://flapen.com/research/us/health-household/purelia)$635K/yr+359.7%**Worth a look**- 77 [**graduation napkins**](https://flapen.com/research/us/health-household/graduation-napkins)$302K/yr+385.7%**Worth a look**- 77 [**credit card wand**](https://flapen.com/research/us/health-household/credit-card-wand)$418K/yr+101.3%**Worth a look**[**All Health & Household niches **](https://flapen.com/research/us/health-household)