---
title: "Quercetin — $6.4M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/quercetin"
last_updated: "2026-08-06T05:52:14.004Z"
locale: en
meta:
description: "Niche score 69/100 · $6.4M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 69/100 · $6.4M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Quercetin — $6.4M/yr Amazon US Niche (2026) - Flapen"
---
# **quercetin**
**Worth a look**
Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 99Growth 16Conversion 95Competition 77Returns 100Price range 81Avg price 95Brand share 83Review moat 25Quality gap 21
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$6.4M**
$6.4M/yr · 2.2M searches
**Conversion**
**Incredible****12.3%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Incredible****$24.21**
avg listing price — sweet spot $15–$100
**Brand share**
**Great****52%**
top-5 brand share — no brand owns this niche
**Price range**
**Great****$8.00–$47.39**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Great****38%**
top-5 click share — an open shelf
**Review moat**
**Bad****4,456.55**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-18.4%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, quercetin is a $6.4M/yr Amazon United States market (2.2M searches/yr). The top 5 brands hold 52% of demand. Verdict: Worth a look — 69/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **quercetin market data**
- **Units sold / yr**
- **250K–300K**
- avg 6,000–8,000/product
- **Revenue / yr**
- **$6.1M–$7.3M**
- units × avg price
- **Conversion rate**
- **12.3%**
- **Avg BSR**
- **#160**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **86%**
- **Out of stock**
- **0.6%**
- **Avg brand age**
- **64 months**
- **Avg seller age**
- **146 days**
## **Competition & brand share**
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.
**Brands**
**30 **▲rising
**Sellers**
**322**
**Top-5 brand share**
**52%**
Top 20: 92%
**Top-5 click share**
**38%**
Top 20: 82%
**Open market**
**43%**
- NOW Foods24% - Pure Encapsulations7% - ForestLeaf7% - Double Wood Supplements7% - Nutricost7% - NatureBell5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -18.4% search growth over the last 90 days.
50K30KSpike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/health-household/quercetin/trend)
## **Top quercetin search terms**
- **quercetin**1.2M/yr-22.5%9.2% conv. - **quercetin with bromelain**465K/yr-15.6%11.2% conv. - **quercetin 500mg capsules**103K/yr-21.6%9.8% conv. - **quercetin 1000mg**53K/yr-3.6%9.2% conv. - **quercetin supplements**86K/yr-45.3%5.9% conv. - **quercitin**43K/yr-1.2%8.8% conv. - **quercetin 500mg**33K/yr+24.0%7.6% conv. - **now quercetin with bromelain**27K/yr-2.2%15.8% conv. - **quercetin bromelain**23K/yr-9.9%4.8% conv. - **quer**18K/yr+11.2%0.8% conv. [**All search terms **](https://flapen.com/research/us/health-household/quercetin/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%3%$193K6%$387K9%$580K12%$773K101001K10K100K 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**NOW Foods Supplements Quercetin with Bromelain Balanced Immune System* 120 Veg Capsules**NOW Foods**$21.43**4.7★21,602 rev](https://www.amazon.com/dp/B0013OSQ5I) [2**NOW Foods Supplements Quercetin with Bromelain Balanced Immune System* 240 Veg Capsules**NOW Foods**$30.50**4.7★21,602 rev](https://www.amazon.com/dp/B002JNK8EY) [3**ForestLeaf Quercetin with Bromelain 1350mg - Blend with Vitamin C & Stinging Nettle Supplement Quercetin 500mg Capsules Non-GMO Gluten Free Natural Function 90 Veggie Caps**ForestLeaf**$23.21**4.7★8,581 rev](https://www.amazon.com/dp/B07RN1BMLQ) [4**Quercetin with Bromelain - 96% Highly Purified - 120 Count (1 200mg Servings) - Supports Healthy Immune Functions in Men and Women (Vegan Safe Third Party Tested Gluten Free) by Double Wood**Double Wood Supplements**$23.60**4.7★4,943 rev](https://www.amazon.com/dp/B0899C4YBK) [5**NOW Supplements Quercetin with Bromelain Balanced Immune System* 60 Veg Capsules**NOW Foods**$12.56**4.7★21,602 rev](https://www.amazon.com/dp/B0C3JGCZH7)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Bronson Quercetin with Bromelain 2 in 1 Wellness Support Non-GMO 60 Capsules**Bronson**$9.99**121 rev9mo ago](https://www.amazon.com/dp/B0FWS29SHH) [**Biosyntra Pure Quercetin 500mg - Pure Quercetin Capsules for Immune Support & Cellular Protection Gluten-Free Non-GMO 120 Capsules**Biosyntra**$10.19**97 rev1y ago](https://www.amazon.com/dp/B0F8Y6Q29B) [**Natures Bounty Quercetin Immune Support 500mg With Vitamin C Rose Hips & Rutin 60 count**Nature's Bounty**$14.88**219 rev1y ago](https://www.amazon.com/dp/B0DVJV8ND6) [**NOW Supplements Quercetin with Bromelain Balanced Immune System* 60 Veg Capsules**NOW Foods**$12.56**21,602 rev3y ago](https://www.amazon.com/dp/B0C3JGCZH7) [**Pure Encapsulations Quercetin UltraSorb | Enhanced-Absorption Cellular Immune and Cardiovascular Support* | 90 Capsules**Pure Encapsulations**$47.39**213 rev4y ago](https://www.amazon.com/dp/B0B488MPWT)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Bronson Quercetin with Bromelain 2 in 1 Wellness Support Non-GMO 60 Capsules**Bronson**$9.99**4.6★**▲ 133%**](https://www.amazon.com/dp/B0FWS29SHH) [**Biosyntra Pure Quercetin 500mg - Pure Quercetin Capsules for Immune Support & Cellular Protection Gluten-Free Non-GMO 120 Capsules**Biosyntra**$10.19**4.6★**▲ 76%**](https://www.amazon.com/dp/B0F8Y6Q29B) [**Life Extension Bio-Quercetin Immune Health Supplement Heart Health Support Gluten Free Non-GMO Vegetarian 30 Capsules**Life Extension**$8.00**4.6★**▲ 46%**](https://www.amazon.com/dp/B07JZHSNZF) [**Nutricost Quercetin 880mg 240 Vegetarian Capsules with Bromelain (165mg) - 120 Servings (440mg Quercetin Per Cap) - Gluten Free Non-GMO**Nutricost**$32.94**4.7★**▲ 35%**](https://www.amazon.com/dp/B01MU30S6Z) [**NOW Supplements Quercetin with Bromelain Balanced Immune System* 60 Veg Capsules**NOW Foods**$12.56**4.7★**▲ 33%**](https://www.amazon.com/dp/B0C3JGCZH7)
**~~View all trending →~~**
## **What buyers say about quercetin**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“The quality feels solid”*
**Vitamin**9%
*“Excellent brand of vitamin”*
**Immunity Booster**8%
*“Great supplement for immune”*
**Allergies**7%
*“Great allergy relief”*
**Value For Money**6%
*“Reasonably priced”*
**Efficiency**5%
*“Works Well”*
**Advertised Vs Actual Product**4%
*“As advertised”*
**Ingredients-Overall**3%
*“Ingredients are good”*
**Inflammation**3%
*“Help with inflammation”*
**Ease Of Chewing/Swallowing**3%
*“Easy Digest”*
### **What buyers complain about **
**Allergies**11%
*“I seem to be allergic to it”*
**Dosage**8%
*“Dosing vs bottle qty = ridiculous”*
**Value For Money**7%
*“Waste of money”*
**Side Effects**6%
*“Causes nausea”*
**Functionality-Overall**5%
*“Doesn't help 100%”*
**Quality-Overall**5%
*“Since their Quality Control seems to be lacking”*
**Size-Overall**3%
*“HUGE”*
**Advertised Vs Actual Product**3%
*“Not displayed in ad”*
**Smell**3%
*“Fishy smell”*
**Ease Of Chewing/Swallowing**2%
*“These look like you are supposed to chew them”*
### **Top return reasons **
**Color**25%
**Functionality-Overall**16%
**Dosage**13%
**Pain Relief-Overall**13%
**Strength**13%
**Value For Money**13%
**Side Effects**3%
**Quality-Overall**3%
**Advertised Vs Actual Product**3%
## **Common questions**
- **Is quercetin profitable to sell on Amazon United States?**
- The niche generates $6.4M/yr across 42 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -18.4%. Flapen's verdict: Worth a look (69/100).
- **How competitive is the quercetin niche?**
- 30 brands and 322 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 52% of demand.
- **What do buyers complain about in quercetin?**
- Top complaints mined from reviews: Allergies, Dosage, Value For Money. The return rate is 0.0%.
- **When does demand for quercetin peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the quercetin niche?**
- Listings span $8.00–$47.39; the average listing price is $24.21 (sweet spot $15–$100). The average incumbent carries 4,457 reviews — the moat a new listing must climb.
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