Quercetin
PassQuercetin scores 69 out of 100, a Pass. Shoppers spend an estimated $6.4M a year here, demand is soft, at -18.4% this quarter, and an estimated 0.0% of orders come back.
- Flapen Score
- 69 / 100Top 2% of 14,768 Health & Household niches · +20 vs the category median of 4969
- Market size
- $6.4M/yr2.2M searches / yr
- 90-day growth
- -18.4%search demand this quarter
- Competition
- 38%top-5 click share · 30 brands · 322 sellers
Flapen Score
Quercetin against its category
The dotted line is the Health & Household average. Past it, Quercetin is stronger. Inside it, weaker.
Market
The Quercetin market on Amazon at a glance
Shoppers on Amazon United States searched for Quercetin 2.2M times last year and spent an estimated $6.4M. The top 5 brands take 52% of clicks. Flapen scores it 69 out of 100, a Pass.
01 · Demand
An estimated 12.3% of those searches ended in a purchase.
Shoppers searched for this 2.2M times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 12.3% of those searches ended in a purchase. Searches in the last 90 days moved -18.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $6.4M a year.
- Searches, last 12 months
- 2.2M
- Growth, 90 days vs prior 90
- -18.4%
- Conversion, latest week
- 12.3%
- Market size, estimated
- $6.4Ma year
- Peak month
- February1.3× the quietest month
- Top search term
- quercetin1.2M searches a year
02 · Price
A sale here is worth $24.21.
Listings sell for $24.21 on average, from $8.00 to $47.39. Amazon reports units sold in ranges. This niche sold 250K to 300K a year. The average listing sells 6,000 to 8,000 of them. At $24.21 that is $145K to $194K a year per listing.
- Average price
- $24.21inside the $15 to $100 sweet spot
- Price range
- $8.00–$47.39
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 250K–300K
- Units per listing a year
- 6,000–8,000
- Revenue per listing a year
- $145K–$194K
- Returns
- 0.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
86% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.6% of listings are out of stock. The average listing ranks #160 within Antioxidants. It carries 4,457 reviews at 4.67 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 86%
- Prime listings
- 100%
- Out of stock, average day
- 0.6%
- Average rank
- #160in Antioxidants
- Average rating
- 4.67 starsAmazon United States average 4.42 stars
- Average reviews
- 4,457per listing
- Listings tracked
- 42
04 · Newcomers
2 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 64 months on average, so the names here are established.
- Launched, last 12 months
- 2
- Successful launches
- 2Amazon's first-year sales bar
- Average brand age
- 64 months
Products
Top Quercetin products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 25, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
NOW Foods Supplements Quercetin with Bromelain Balanced Immune System* 120 Veg Capsules
- Price
- $21.43
- Rating
- 4.7/5
- Reviews
- 21,602
- Age
- 19y ago

NOW Foods Supplements Quercetin with Bromelain Balanced Immune System* 240 Veg Capsules
- Price
- $30.50
- Rating
- 4.7/5
- Reviews
- 21,602
- Age
- 16y ago

ForestLeaf Quercetin with Bromelain 1350mg - Blend with Vitamin C & Stinging Nettle Supplement Quercetin 500mg Capsules Non-GMO Gluten Free Natural Function 90 Veggie Caps
- Price
- $23.21
- Rating
- 4.7/5
- Reviews
- 8,581
- Age
- 7y ago

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
- Price
- $23.60
- Rating
- 4.7/5
- Reviews
- 4,943
- Age
- 6y ago

NOW Supplements Quercetin with Bromelain Balanced Immune System* 60 Veg Capsules
- Price
- $12.56
- Rating
- 4.7/5
- Reviews
- 21,602
- Age
- 3y ago
Trending
estimated 90-day click momentum
Bronson Quercetin with Bromelain 2 in 1 Wellness Support Non-GMO 60 Capsules
- Price
- $9.99
- Rating
- 4.6/5
- Reviews
- 121
- Age
- 9mo ago

Biosyntra Pure Quercetin 500mg - Pure Quercetin Capsules for Immune Support & Cellular Protection Gluten-Free Non-GMO 120 Capsules
- Price
- $10.19
- Rating
- 4.6/5
- Reviews
- 97
- Age
- 1y ago

Life Extension Bio-Quercetin Immune Health Supplement Heart Health Support Gluten Free Non-GMO Vegetarian 30 Capsules
- Price
- $8.00
- Rating
- 4.6/5
- Reviews
- 1,739
- Age
- 7y ago

Nutricost Quercetin 880mg 240 Vegetarian Capsules with Bromelain (165mg) - 120 Servings (440mg Quercetin Per Cap) - Gluten Free Non-GMO
- Price
- $32.94
- Rating
- 4.7/5
- Reviews
- 3,901
- Age
- 9y ago

NOW Supplements Quercetin with Bromelain Balanced Immune System* 60 Veg Capsules
- Price
- $12.56
- Rating
- 4.7/5
- Reviews
- 21,602
- Age
- 3y ago
Newest
by launch date
Bronson Quercetin with Bromelain 2 in 1 Wellness Support Non-GMO 60 Capsules
- Price
- $9.99
- Rating
- 4.6/5
- Reviews
- 121
- Age
- 9mo ago

Biosyntra Pure Quercetin 500mg - Pure Quercetin Capsules for Immune Support & Cellular Protection Gluten-Free Non-GMO 120 Capsules
- Price
- $10.19
- Rating
- 4.6/5
- Reviews
- 97
- Age
- 1y ago

Natures Bounty Quercetin Immune Support 500mg With Vitamin C Rose Hips & Rutin 60 count
- Price
- $14.88
- Rating
- 4.7/5
- Reviews
- 219
- Age
- 1y ago

NOW Supplements Quercetin with Bromelain Balanced Immune System* 60 Veg Capsules
- Price
- $12.56
- Rating
- 4.7/5
- Reviews
- 21,602
- Age
- 3y ago

Pure Encapsulations Quercetin UltraSorb | Enhanced-Absorption Cellular Immune and Cardiovascular Support* | 90 Capsules
- Price
- $47.39
- Rating
- 4.7/5
- Reviews
- 213
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 38% of clicks, no more. An open shelf where new products get seen.
Brands
30 rising
Sellers
322
Est. top-5 brand share
52%
Top 20: 92%
Est. top-5 click share
38%
Top 20: 82%
Open market
43%
- NOW Foods24%
- Pure Encapsulations7%
- ForestLeaf7%
- Double Wood Supplements7%
- Nutricost7%
- NatureBell5%
Demand
Quercetin search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.3×
Search terms
Top Quercetin search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- quercetin1.2M/yr
- quercetin with bromelain465K/yr
- quercetin 500mg capsules103K/yr
- quercetin 1000mg53K/yr
- quercetin supplements86K/yr
- quercitin43K/yr
- quercetin 500mg33K/yr
- now quercetin with bromelain27K/yr
- quercetin bromelain23K/yr
- quer18K/yr
Reviews and returns
What reviews say buyers love and hate about Quercetin
We read the reviews and the return reasons for every product selling here.
“I seem to be allergic to it”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
18 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Quercetin questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









