Nattovena
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Incredible$28.26avg listing price — sweet spot $15–$100
Price range
Great$14.42–$49.75cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great9.1%search→purchase rate — share of searches ending in a sale
Review moat
Okay1,581.25avg incumbent reviews — the moat a new listing must climb
Growth
Okay+8.4%90-day search growth — must beat 0% to launch
Market size
Bad$88K$88K/yr · 34K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Is nattovena profitable on Amazon?
According to Flapen's Amazon United States niche tracking, nattovena is a $88K/yr Amazon United States market (34K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Mar–Apr–May. Verdict: Skip it — 41/100.
Data updated Jul 26, 2026 · scored weekly · How we score niches
nattovena market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 4K–5K
- avg 1,000–1,250/product
- Revenue / yr
- $113K–$141K
- units × avg price
- Conversion rate
- 9.1%
- Avg BSR
- #480
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 58 months
- Avg seller age
- 193 days
Competition: brands, sellers & click share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
2 falling
Sellers
6
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- Arthur Andrew Medical96%
- Double Wood Supplements4%
- Open — no brand owns it (0%)
nattovena demand & seasonality
Weekly Amazon search volume, last 95 weeks — +8.4% search growth over the last 90 days.Peak months: Mar, Apr, May · busiest ÷ quietest = 2.3×
Top nattovena 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 4 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Arthur Andrew Medical Nattovena Pure Nattokinase Supplement Double Strength 4 000 FUs per Capsule 180
Arthur Andrew Medical$49.754.7★929 rev
Arthur Andrew Medical Nattovena Pure Nattokinase Supplement Double Strength 4 000 FUs per Capsule 90
Arthur Andrew Medical$29.874.7★929 rev
Arthur Andrew Medical - Nattovena Pure Nattokinase Circulatory and Heart Health Vegan Non-GMO 30 Capsules
Arthur Andrew Medical$14.424.7★929 rev
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$18.994.6★3,538 rev
Newest
by launch dateNattokinase Supplement 4 000 FU Servings 120 Capsules (Derived from Japanese Natto) Systemic Enzymes for Cardiovascular and Circulatory Support by Double Wood
Double Wood Supplements$18.993,538 rev
Arthur Andrew Medical Nattovena Pure Nattokinase Supplement Double Strength 4 000 FUs per Capsule 90
Arthur Andrew Medical$29.87929 rev
Arthur Andrew Medical Nattovena Pure Nattokinase Supplement Double Strength 4 000 FUs per Capsule 180
Arthur Andrew Medical$49.75929 rev
Arthur Andrew Medical - Nattovena Pure Nattokinase Circulatory and Heart Health Vegan Non-GMO 30 Capsules
Arthur Andrew Medical$14.42929 rev
Trending
90-day click momentumArthur Andrew Medical Nattovena Pure Nattokinase Supplement Double Strength 4 000 FUs per Capsule 90
Arthur Andrew Medical$29.874.7★
Arthur Andrew Medical Nattovena Pure Nattokinase Supplement Double Strength 4 000 FUs per Capsule 180
Arthur Andrew Medical$49.754.7★
Arthur Andrew Medical - Nattovena Pure Nattokinase Circulatory and Heart Health Vegan Non-GMO 30 Capsules
Arthur Andrew Medical$14.424.7★
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$18.994.6★
What reviews say buyers love and hate about nattovena
What buyers praise and complain about, mined from review topics.What buyers love
“The quality feels consistent”
“Decent price”
“Good supplement”
“AS DESCRIBED”
“Very effective”
“blood pressure all good so far”
“Improved cholesterol levels”
“Works, use caution on dosing”
“No side effects”
“The product is easy to consume”
What buyers complain about
“Missing 30% of claimed potency”
“This causes significant heartburn”
“Deceptive product marketing - BEWARE”
“I was on three different blood pressure medication that almost killed me”
“Poor manufacturing quality control”
“stiffed feeling from meals after 3 days”
“no longer have high numbers of calcium in my blood work up”
“still too early to know how it is affecting me”
“Didn't work for me at all”
“Ineffective”
Top return reasons
Common nattovena questions
- Is nattovena profitable to sell on Amazon United States?
- The niche generates $88K/yr across 4 tracked products. 90-day search growth is +8.4%. Flapen's verdict: Skip it (41/100).
- How competitive is the nattovena niche?
- 2 brands and 6 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in nattovena?
- Top complaints mined from reviews: Dosage, Heart Health, Advertised Vs Actual Product. The return rate is 0.0%.
- When does demand for nattovena peak?
- Demand peaks in Mar–Apr–May; the busiest month runs 2.3× the quietest.
- What does it cost to enter the nattovena niche?
- Listings span $14.42–$49.75; the average listing price is $28.26 (sweet spot $15–$100). The average incumbent carries 1,581 reviews — the moat a new listing must climb.