Nattokinase Serrapeptase
Worth a lookShows low returns (0.0%), but a small market ($98K/yr) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Incredible$28.85avg listing price — sweet spot $15–$100
Price range
Great$14.20–$70.91cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good65%top-5 brand share — brands hold most of the demand
Conversion
Good5.3%search→purchase rate — share of searches ending in a sale
Review moat
Good1,405.65avg incumbent reviews — the moat a new listing must climb
Competition
Okay58%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★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
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.Peak months: Jul · busiest ÷ quietest = 2.6×
Top nattokinase serrapeptase search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- nattokinase serrapeptase27K/yr
- serrapeptase and nattokinase supplement21K/yr
- lumbrokinase serrapeptase nattokinase7K/yr
- natto serra6K/yr
- nattokinase serrapeptase supplement4K/yr
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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$23.924.6★1,965 rev
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$22.384.5★1,299 rev
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$29.444.6★684 rev
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$36.554.5★637 rev
SOLARAY Nattokinase Serrapeptase Supplement - Enteric Coated - 3000 FU Nattokinase Supplement - Circulation Cardiovascular Sinus Support - Lab Verified 60-Day Guarantee - 30 Servings 30 VegCaps
SOLARAY$33.744.6★321 rev
Newest
by launch date
VivoNu Nattokinase 300 Softgels 500mg(10 000 FU) Per Serving
VivoNu$30.167 rev
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$27.4413 rev
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$33.0945 rev
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$48.50144 rev
Gyumolics Nattokinase Supplement 10000FU with Organic Nattokinase Serrapeptase Bromelain Curcumin Vitamin E & Ginseng Movement Comfort 90 Capsules
Gyumolics$20.63467 rev
Trending
90-day click momentumUltimate 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$33.094.6★
VivoNu Nattokinase 300 Softgels 500mg(10 000 FU) Per Serving
VivoNu$30.163.8★
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$27.445.0★
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$48.504.1★
Doctors Best Nattokinase Non-GMO Vegan Gluten Free 270 Veggie Caps
Doctor's BEST$31.814.6★
What reviews say buyers love and hate about nattokinase serrapeptase
What buyers praise and complain about, mined from review topics.What buyers love
“It feels like good quality and arrived quickly”
“Good for heart health”
“Decent price”
“it boosts the vitamins So they can absorb faster”
“Effective”
“Been using this product for over 2 years now”
“As advertised”
“Great for my blood pressure”
“effective dosage”
“The capsules are easy to take”
What buyers complain about
“not per serving like one would expect”
“Also have noticed blood pressure is trending down”
“Very misleading advertising”
“Not proper ingredients listed”
“What heart attack”
“Still debatable on the effects of it on my body”
“This is not cheap”
“Caused digestion issues”
“Poor manufacturing quality control”
“I have noticed a spike in energy levels”
Top return reasons
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.