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58

quercetin

Worth a look

Shows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size 63Growth 22Conversion 95Competition 23Returns 100Price range 95Avg price 93Brand share 50Review moat 76Quality gap 42

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Incredible12.5%

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

Price range

Incredible€15.97–€32.06

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

Avg price

Great€22.37

avg listing price — sweet spot $15–$100

Review moat

Great470.83

avg incumbent reviews — the moat a new listing must climb

Market size

Good€583K

€583K/yr · 208K searches

Brand share

Good75%

top-5 brand share — brands hold most of the demand

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Bad72%

top-5 click share — a locked-up shelf

Growth

Bad-6.4%

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

According to Flapen's Amazon Germany niche tracking, quercetin is a €583K/yr Amazon Germany market (208K searches/yr). The top 5 brands hold 75% of demand. Demand peaks in Mar. Verdict: Worth a look — 58/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

quercetin market data

Units sold / yr
20K–25K
avg 1,250–1,500/product
Revenue / yr
€447K–€559K
units × avg price
Conversion rate
12.5%
Avg BSR
#9
Page quality
0%
Prime
92%
Sponsored
92%
Out of stock
11.8%
Avg brand age
49 months
Avg seller age
182 days

Competition & brand share

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.

Brands

11 falling

Sellers

29

Top-5 brand share

75%

Top 20: 100%

Top-5 click share

72%

Top 20: 100%

Open market

19%

  • WeightWorld26%
  • GREEN NATURALS18%
  • NATURTREU13%
  • QIDOSHA12%
  • Vegavero6%
  • Scheunengut6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -6.4% search growth over the last 90 days.
6K4KPrime Day '24Spike '24Holiday '24Spike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Mar · busiest ÷ quietest = 1.7×

Top quercetin search terms

  • quercetin155K/yr
  • quercetin hochdosiert28K/yr
  • quercetin liposomal9K/yr
  • quercetin phytosome4K/yr
  • quercetin 500mg6K/yr
  • quercitin2K/yr
  • quercetin kapseln3K/yr
All search terms

Top quercetin products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%€58K20%€117K30%€175K40%€233K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 12 tracked products in this niche — three views at once, no toggling.

What buyers say about quercetin

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

What buyers love

Qualität insgesamt16%

“Super Produkt”

Allergien10%

“Wegen Allergien”

Dosierung7%

“und klar dosiert.”

Benutzerfreundlichkeit5%

“Gut verträglich”

Vegan/Biologisch5%

“vegan”

Immunitätsverstärker5%

“stabilisiert mich dieses Produkt – eine schnelle Stärkung des Immunsystems”

Vitamin4%

“Vitamin-C-Boost”

Einfaches Kauen/Schlucken4%

“lässt sich gut schlucken”

Energieniveau4%

“Hochwertig, sanft und ich fühle mich insgesamt stabiler und energiegeladener”

Entzündung3%

“Es soll antioxidativ, antiviral, entzündungshemmend und antikarzinogen wirken sowie nicht zuletzt auch den Blutdruck senken”

What buyers complain about

Funktionalität insgesamt11%

“Leider wenig Wirkung”

Reguliert die Verdauung8%

“Es kann bei HIT sogar den Darm reizen”

Allergien7%

“ein absoluter Reizstoff bei Rosacea,”

Vitamin4%

“Super Nahrungsergänzung anstelle von hochwertigem Vitamin C”

Dosierung4%

“Dosierung sollte auf maximal 1000mg beschränkt werden,damit die Leber nicht überlastet wird”

Preis-Leistungs-Verhältnis4%

“wird immer teurer”

Gesamtgröße3%

“Verpackung und Kapseln sind deutlich kleiner geworden”

Qualität insgesamt3%

“Qualitätsprobleme”

Gewichtsverlust3%

“hätte ich gehofft, dass es ein wenig den Hunger bzw beim Abnehmen hilft.”

Inhaltsstoffe – insgesamt3%

“Falsche Angaben bei den Zutaten”

Common questions

Is quercetin profitable to sell on Amazon Germany?
The niche generates €583K/yr across 12 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -6.4%. Flapen's verdict: Worth a look (58/100).
How competitive is the quercetin niche?
11 brands and 29 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 75% of demand.
What do buyers complain about in quercetin?
Top complaints mined from reviews: Funktionalität insgesamt, Reguliert die Verdauung, Allergien. The return rate is 0.1%.
When does demand for quercetin peak?
Demand peaks in Mar; the busiest month runs 1.7× the quietest.
What does it cost to enter the quercetin niche?
Listings span €15.97–€32.06; the average listing price is €22.37 (sweet spot $15–$100). The average incumbent carries 471 reviews — the moat a new listing must climb.