Is maia nattokinase profitable to sell on Amazon United States?

The niche generates $97K/yr across 13 tracked products. 7 of 7 products launched in the last 360 days are still selling. 90-day search growth is +18.1%. Flapen's verdict: Worth a look (51/100).

How competitive is the maia nattokinase niche?

10 brands and 13 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 92% of demand.

What do buyers complain about in maia nattokinase?

Top complaints mined from reviews: Dosage, Advertised Vs Actual Product, Value For Money. The return rate is 0.0%.

What does it cost to enter the maia nattokinase niche?

Listings span $7.90–$49.73; the average listing price is $31.46 (sweet spot $15–$100). The average incumbent carries 630 reviews — the moat a new listing must climb.

Maia Nattokinase

Worth a look

Shows low returns (0.0%), but a concentrated shelf (top 5 take 84% of clicks) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$31.46

avg listing price — sweet spot $15–$100

Price range

Great$7.90–$49.73

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Great8.2%

search→purchase rate — share of searches ending in a sale

Review moat

Good630.38

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Growth

Okay+18.1%

90-day search growth — must beat 0% to launch

Market size

Bad$97K

$97K/yr · 38K searches

Brand share

Bad92%

top-5 brand share — brand-locked demand

Competition

Bad84%

top-5 click share — a locked-up shelf

Signals Low Review Barrier

Is maia nattokinase profitable on Amazon?

According to Flapen's Amazon United States niche tracking, maia nattokinase is a $97K/yr Amazon United States market (38K searches/yr). The top 5 brands hold 92% of demand. Verdict: Worth a look — 51/100.

Data updated Jul 26, 2026 · scored weekly · How we score niches

maia nattokinase market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 3K–4K; avg 250–500/product
Revenue / yr: $94K–$126K; units × avg price
Conversion rate: 8.2%
Avg BSR: #2,269
Page quality: 0%
Prime: 100%
Sponsored: 92%
Out of stock: 6.2%
Avg brand age: 41 months
Avg seller age: 192 days

Competition: brands, sellers & click share

The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.

Brands

Sellers

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

84%

Top 20: 100%

Open market

MAÏA60%
MAÏA SUPERFOODS24%
Luma Nutrition4%
Lunakai2%
Double Wood Supplements2%
Clean Nutraceuticals2%
Open — no brand owns it (4 brands, 6%)

maia nattokinase demand & seasonality

Weekly Amazon search volume, last 12 weeks — +18.1% search growth over the last 90 days.

Open Trend

Top maia nattokinase search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

maia nattokinase20K/yr -20.4%6.5% conv.
maia nattokinase 5000 fu7K/yr +394.3%7.6% conv.
maia nattokinase supplement11K/yr +2.1%7.2% conv.

All search terms

Top maia 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

MAA SUPERFOODS Maia Nattokinase | 5000 FU | Supports Arterial Cleanliness Nitric Oxide Cardiovascular Wellness | Fermented Soybean Enzyme Supplement

MAÏA SUPERFOODS$35.034.3★24 rev

Maia Nattokinase Supplement with 5000 FU Supports Arterial Cleanliness and Heart Health Promotes Healthy Circulation Added Vitality and Wellness Plant-Based Capsules Zero Sugar 60 Capsules (2)

MAÏA$49.054.4★91 rev

Maia Nattokinase Supplement with 5000 FU Supports Arterial Cleanliness and Heart Health Promotes Healthy Circulation Added Vitality and Wellness Plant-Based Capsules Zero Sugar 60 Capsules

MAÏA$33.844.4★91 rev

Maia Nattokinase Supplement with 5000 FU of Nattokinase Support Healthy Circulation & Promote Cardiovascular Health Non-GMO Plant-Based Capsules 60 Veggie Capsules

MAÏA$34.454.3★58 rev

Maia Nattokinase Supplement with 5000 FU of Nattokinase Support Healthy Circulation & Promote Cardiovascular Health Non-GMO Plant-Based Capsules 120 Capsules

MAÏA$49.734.3★58 rev

Newest

by launch date

Maia Nattokinase Supplement with 5000 FU Supports Arterial Cleanliness and Heart Health Promotes Healthy Circulation Added Vitality and Wellness Plant-Based Capsules Zero Sugar 60 Capsules (2)

MAÏA$49.0591 rev

4mo ago

MAA SUPERFOODS Maia Nattokinase | 5000 FU | Supports Arterial Cleanliness Nitric Oxide Cardiovascular Wellness | Fermented Soybean Enzyme Supplement

MAÏA SUPERFOODS$35.0324 rev

4mo ago

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

5mo ago

Maia Nattokinase Supplement with 5000 FU of Nattokinase Support Healthy Circulation & Promote Cardiovascular Health Non-GMO Plant-Based Capsules 120 Capsules

MAÏA$49.7358 rev

6mo ago

Maia Nattokinase Supplement with 5000 FU of Nattokinase Support Healthy Circulation & Promote Cardiovascular Health Non-GMO Plant-Based Capsules 60 Veggie Capsules

MAÏA$34.4558 rev

7mo ago

What reviews say buyers love and hate about maia nattokinase

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall18%

“The quality feels consistent”

Taste-Overall6%

“It tastes amazing”

Vitamin6%

“it boosts the vitamins So they can absorb faster”

Heart Health6%

“Excellent support for circulation and heart health”

Value For Money5%

“Decent price”

Advertised Vs Actual Product5%

“As advertised”

Blood Pressure5%

“I have notice it has help with blood pressure”

Efficiency3%

“Effective”

Ease Of Chewing/Swallowing3%

“Easy to swallow”

Flavor3%

“The flavor is natural”

What buyers complain about

Dosage15%

“not per serving like one would expect”

Advertised Vs Actual Product7%

“deceptive advertising”

Value For Money5%

“Over price”

Heart Health5%

“My cholesterol. bad”

Taste-Overall4%

“Tastes like none”

Blood Pressure4%

“Could be if you have some issue with blood flow through the heart”

Quality-Overall4%

“Poor manufacturing quality control”

Side Effects4%

“causing great pain”

Pain Relief-Overall3%

“About 2 that afternoon my ankles started tingling and burning”

Functionality-Overall2%

“Did not work for me”

Top return reasons

Side Effects50%

Fever Relief17%

Leak-Proof17%

Advertised Vs Actual Product8%

Ingredients-Overall8%

Common maia nattokinase questions

Is maia nattokinase profitable to sell on Amazon United States?: The niche generates $97K/yr across 13 tracked products. 7 of 7 products launched in the last 360 days are still selling. 90-day search growth is +18.1%. Flapen's verdict: Worth a look (51/100).
How competitive is the maia nattokinase niche?: 10 brands and 13 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 92% of demand.
What do buyers complain about in maia nattokinase?: Top complaints mined from reviews: Dosage, Advertised Vs Actual Product, Value For Money. The return rate is 0.0%.
What does it cost to enter the maia nattokinase niche?: Listings span $7.90–$49.73; the average listing price is $31.46 (sweet spot $15–$100). The average incumbent carries 630 reviews — the moat a new listing must climb.