---
title: "Nattokinase Serrapeptase — $8K/mo Amazon US Product Research"
canonical_url: "https://flapen.com/research/us/health-household/nattokinase-serrapeptase"
last_updated: "2026-08-12T14:08:01.837Z"
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description: "Amazon product research for nattokinase serrapeptase: $8K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for nattokinase serrapeptase: $8K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Nattokinase Serrapeptase — $8K/mo Amazon US Product Research"
---
# **Nattokinase Serrapeptase**
**Worth a look**
Shows low returns (0.0%), but a small market ($98K/yr) keeps it on the watch list.
Market size 24Growth 39Conversion 61Competition 45Returns 100Price range 94Avg price 95Brand share 66Review moat 52Quality gap 40
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$28.85**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$14.20–$70.91**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****65%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Good****5.3%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****1,405.65**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****58%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+10.9%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$98K**
$98K/yr · 64K searches
## **Is nattokinase serrapeptase profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, nattokinase serrapeptase is a $98K/yr Amazon United States market (64K searches/yr). The top 5 brands hold 65% of demand. Demand peaks in Jul. Verdict: Worth a look — 55/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **nattokinase serrapeptase market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **4K–5K**
- avg 250–500/product
- **Revenue / yr**
- **$115K–$144K**
- units × avg price
- **Conversion rate**
- **5.3%**
- **Avg BSR**
- **#408**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **92%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **65 months**
- **Avg seller age**
- **172 days**
## **Competition: brands, sellers & click share**
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**20 **▲rising
**Sellers**
**46**
**Top-5 brand share**
**65%**
Top 20: 100%
**Top-5 click share**
**58%**
Top 20: 95%
**Open market**
**30%**
- Doctor's BEST20% - Clean Nutraceuticals16% - Naering13% - Etta Vita11% - SOLARAY6% - Designs for Health4%
## **nattokinase serrapeptase demand & seasonality**
Weekly Amazon search volume, last 98 weeks — +10.9% search growth over the last 90 days.
3K2KSpike '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Jul · busiest ÷ quietest = 2.6×
[**Open Trend **](https://flapen.com/research/us/health-household/nattokinase-serrapeptase/trend)
## **Top nattokinase serrapeptase search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **nattokinase serrapeptase**27K/yr-9.1%4.6% conv. - **serrapeptase and nattokinase supplement**21K/yr+30.4%5.1% conv. - **lumbrokinase serrapeptase nattokinase**7K/yr+100.0%6.3% conv. - **natto serra**6K/yr-1.9%9.8% conv. - **nattokinase serrapeptase supplement**4K/yr-26.5%6.6% conv. [**All search terms **](https://flapen.com/research/us/health-household/nattokinase-serrapeptase/search-terms)
## **Top nattokinase serrapeptase 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%5%$5K10%$10K15%$15K20%$20K1101001K10K 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**Doctors Best Natto Serra for Men & Women - Nattokinase and Serrapeptase Enzyme Supplement Caps for Circulatory & Immune Health Support Optimal Digestive Absorption Non GMO Vegan - 90 Veg Capsules**Doctor's BEST**$23.92**4.6★1,965 rev](https://www.amazon.com/dp/B00DBEVTDE) [2**Clean Nutraceuticals Nattokinase 5000 FU Serrapeptase 120000 SPU Lumbrokinase Enzyme Supplement with Bromelain Papain Papaya Enzymes Rutin Extract Amla Magnesium Vitamin B6 & VIT C Capsules**Clean Nutraceuticals**$22.38**4.5★1,299 rev](https://www.amazon.com/dp/B0C4J9GCT8) [3**Potent Nattokinase 4000 FU Serrapeptase 240000 SPU Lumbrokinase 2000 FU Supplement - Proteolytic Enzymes Capsules for Energy Support Digestion Detox Cognition & Gut Health for Men & Women**Etta Vita**$29.44**4.6★684 rev](https://www.amazon.com/dp/B0CMJFPJZ9) [4**Liposomal Nattokinase 12 000 FU Serrapeptase 360 000 SPU Enzyme Supplement - Enriched with Synergistic Enzymes and Nutrient Blend & Inulin for Circulatory Gut Digestion 60 Capsules (2 Bottle)**Naering**$36.55**4.5★637 rev](https://www.amazon.com/dp/B0D41N8QD5) [5**SOLARAY Nattokinase Serrapeptase Supplement - Enteric Coated - 3000 FU Nattokinase Supplement - Circulation Cardiovascular Sinus Support - Lab Verified 60-Day Guarantee - 30 Servings 30 VegCaps**SOLARAY**$33.74**4.6★321 rev](https://www.amazon.com/dp/B000ORJPPA)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**VivoNu Nattokinase 300 Softgels 500mg(10 000 FU) Per Serving**VivoNu**$30.16**7 rev2mo ago](https://www.amazon.com/dp/B0H2V9RLG9) [**Marafiki Liposomal Nattokinase Supplement 12 000 FU with Serrapeptase 360 000 SPU Multi Enzyme Complex with Vitamins Minerals & Inulin for Circulation & Flow - 60 Veggie Capsules**Marafiki**$27.44**13 rev2mo ago](https://www.amazon.com/dp/B0H2MN4FY4) [**Ultimate Nattokinase 12 000FU Serrapeptase 360 000 SPU Lumbrokinase 10 000 FUV Triple Enzyme Supplement - Nattokinase Supplement for Cardiovascular and Circulatory Support Gluten Free 90 Capsules**yewloud**$33.09**45 rev4mo ago](https://www.amazon.com/dp/B0GV45985Z) [**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) [**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
[**Ultimate Nattokinase 12 000FU Serrapeptase 360 000 SPU Lumbrokinase 10 000 FUV Triple Enzyme Supplement - Nattokinase Supplement for Cardiovascular and Circulatory Support Gluten Free 90 Capsules**yewloud**$33.09**4.6★**▲ 246%**](https://www.amazon.com/dp/B0GV45985Z) [**VivoNu Nattokinase 300 Softgels 500mg(10 000 FU) Per Serving**VivoNu**$30.16**3.8★**▲ 242%**](https://www.amazon.com/dp/B0H2V9RLG9) [**Marafiki Liposomal Nattokinase Supplement 12 000 FU with Serrapeptase 360 000 SPU Multi Enzyme Complex with Vitamins Minerals & Inulin for Circulation & Flow - 60 Veggie Capsules**Marafiki**$27.44**5.0★**▲ 241%**](https://www.amazon.com/dp/B0H2MN4FY4) [**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★**▲ 114%**](https://www.amazon.com/dp/B0FJ2BS3Q8) [**Doctors Best Nattokinase Non-GMO Vegan Gluten Free 270 Veggie Caps**Doctor's BEST**$31.81**4.6★**▲ 74%**](https://www.amazon.com/dp/B0051M9DKU)
**~~View all trending →~~**
## **What reviews say buyers love and hate about nattokinase serrapeptase**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“It feels like good quality and arrived quickly”*
**Heart Health**7%
*“Good for heart health”*
**Value For Money**7%
*“Decent price”*
**Vitamin**7%
*“it boosts the vitamins So they can absorb faster”*
**Efficiency**6%
*“Effective”*
**Side Effects**5%
*“Been using this product for over 2 years now”*
**Advertised Vs Actual Product**5%
*“As advertised”*
**Blood Pressure**4%
*“Great for my blood pressure”*
**Dosage**4%
*“effective dosage”*
**Ease Of Chewing/Swallowing**3%
*“The capsules are easy to take”*
### **What buyers complain about **
**Dosage**10%
*“not per serving like one would expect”*
**Blood Pressure**6%
*“Also have noticed blood pressure is trending down”*
**Advertised Vs Actual Product**5%
*“Very misleading advertising”*
**Ingredients-Overall**5%
*“Not proper ingredients listed”*
**Heart Health**4%
*“What heart attack”*
**Functionality-Overall**4%
*“Still debatable on the effects of it on my body”*
**Value For Money**4%
*“This is not cheap”*
**Regulates Digestion**3%
*“Caused digestion issues”*
**Quality-Overall**3%
*“Poor manufacturing quality control”*
**Energy Level**3%
*“I have noticed a spike in energy levels”*
### **Top return reasons **
**Blood Pressure**25%
**Leak-Proof**25%
**Sensitivity-Overall**25%
**Advertised Vs Actual Product**13%
**Ingredients-Overall**13%
## **Common nattokinase serrapeptase questions**
- **Is nattokinase serrapeptase profitable to sell on Amazon United States?**
- The niche generates $98K/yr across 26 tracked products. 2 of 4 products launched in the last 360 days are still selling. 90-day search growth is +10.9%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the nattokinase serrapeptase niche?**
- 20 brands and 46 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 65% of demand.
- **What do buyers complain about in nattokinase serrapeptase?**
- Top complaints mined from reviews: Dosage, Blood Pressure, Advertised Vs Actual Product. The return rate is 0.0%.
- **When does demand for nattokinase serrapeptase peak?**
- Demand peaks in Jul; the busiest month runs 2.6× the quietest.
- **What does it cost to enter the nattokinase serrapeptase niche?**
- Listings span $14.20–$70.91; the average listing price is $28.85 (sweet spot $15–$100). The average incumbent carries 1,406 reviews — the moat a new listing must climb.
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