---
title: "Antioxidants Supplement — $349K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/antioxidants-supplement"
last_updated: "2026-08-09T11:54:13.361Z"
locale: en
meta:
description: "Niche score 50/100 · $349K/yr market · 341K searches/yr · $24.91 avg price. Soft demand (-11.7% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · $349K/yr market · 341K searches/yr · $24.91 avg price. Soft demand (-11.7% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Antioxidants Supplement — $349K/yr Amazon US Niche (2026) - Flapen"
---
# **antioxidants supplement**
**Worth a look**
Shows low returns (0.0%), but soft demand (-11.7% this quarter) keeps it on the watch list.
Market size 53Growth 19Conversion 51Competition 26Returns 100Price range 83Avg price 95Brand share 57Review moat 39Quality gap 35
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$24.91**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$4.67–$75.98**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Market size**
**Good****$349K**
$349K/yr · 341K searches
**Conversion**
**Good****4.1%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Okay****2,643.68**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****69%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Bad****-11.7%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United States niche tracking, antioxidants supplement is a $349K/yr Amazon United States market (341K searches/yr). The top 5 brands hold 71% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **antioxidants supplement market data**
- **Units sold / yr**
- **13K–15K**
- avg 750–1,000/product
- **Revenue / yr**
- **$311K–$374K**
- units × avg price
- **Conversion rate**
- **4.1%**
- **Avg BSR**
- **#914**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **68%**
- **Out of stock**
- **2.8%**
- **Avg brand age**
- **73 months**
- **Avg seller age**
- **144 days**
## **Competition & brand share**
The top 5 products take 69% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**17 **▼falling
**Sellers**
**577**
**Top-5 brand share**
**71%**
Top 20: 100%
**Top-5 click share**
**69%**
Top 20: 100%
**Open market**
**24%**
- NOW Foods19% - Nutricost17% - Carlyle15% - Healths Harmony14% - 21st Century6% - Pure Encapsulations6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -11.7% search growth over the last 90 days.
9K7KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/health-household/antioxidants-supplement/trend)
## **Top antioxidants supplement search terms**
- **antioxidant nutritional supplements**78K/yr-8.7%2.1% conv. - **antioxidant**65K/yr+5.0%2.6% conv. - **antioxidants supplement**78K/yr-48.8%2.0% conv. - **antioxidants**22K/yr+1.1%1.9% conv. - **antioxidant supplement**16K/yr+27.8%1.5% conv. - **antioxidant blend**13K/yr-10.3%7.5% conv. - **super antioxidants supplements**10K/yr+29.7%5.4% conv. - **anti oxidant supplement**12K/yr-18.3%3.3% conv. - **antioxidant supplements**9K/yr+15.8%1.1% conv. - **antioxidant vitamins**5K/yr+46.9%1.1% conv. [**All search terms **](https://flapen.com/research/us/health-household/antioxidants-supplement/search-terms)
## **Top antioxidants supplement 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%5%$17K10%$35K15%$52K20%$70K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 19 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NOW Supplements Super Antioxidants with Herbal Extracts and a Broad Spectrum of Flavonoids for Immune Support 120 Veg Capsules**NOW Foods**$21.10**4.6★1,125 rev](https://www.amazon.com/dp/B0013OXK8Q) [2**Nutricost Super Antioxidants (1000mg) 120 Capsules 60 Servings**Nutricost**$16.53**4.5★92 rev](https://www.amazon.com/dp/B0FFPQQQFW) [3**Carlyle Antioxidants Supplement | 100 Caplets | Nutritional Complex**Carlyle**$9.99**4.6★402 rev](https://www.amazon.com/dp/B0BNLZG55N) [4**Super Antioxidants Supplement for Women & Men - High Potency Herbal & Fruit Blend with Acai Goji Pomegranate Elderberry & Resveratrol for Skin Care & Immune Support - Vegan & Non-GMO - 60 Capsules**Healths Harmony**$18.73**4.5★1,355 rev](https://www.amazon.com/dp/B018WUID8U) [5**21st Century Ace Antioxidant Tablets 75Count**21st Century**$8.11**4.6★783 rev](https://www.amazon.com/dp/B0007PQAOS)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Aiwevon Premium Astaxanthin Softgels 12mg 120 Microalgae Based Antioxidant Supplement with Coconut Oil Supports Healthy Skin Vision Circulation & Joint Function High Quality Non GMO Formula**Aiwevon**$9.09**24 rev2mo ago](https://www.amazon.com/dp/B0GY432QVR) [**Astaxanthin Supplement 12mg Softgels 120 Count Natural Microalgae Astaxanthin with MCT Oil Easy to Swallow No Strong Taste Antioxidant Support for Skin Eye Heart Joint Health Non-GMO Gluten Free**Aiwevon**$8.51**34 rev2mo ago](https://www.amazon.com/dp/B0GWH7DCLF) [**14-in-1 Astaxanthin 12mg & Lutein 40mg with Zeaxanthin Supplements 6 Month Supply Fresh Microalgae Source Supports Eye Skin Antioxidant Joint Circulatory Health Non-GMO Gluten Free 180 Softgels**VivoNu**$23.76**513 rev7mo ago](https://www.amazon.com/dp/B0G641K9KM) [**Nutricost Super Antioxidants (1000mg) 120 Capsules 60 Servings**Nutricost**$16.53**92 rev1y ago](https://www.amazon.com/dp/B0FFPQQQFW) [**Blueprint Bryan Johnson Advanced Antioxidant Supplement Lutein Zeaxanthin Lycopene Vitamin K1 K2 Vegan Capsules for Vision Bone & Heart Support Updated Formula of Essential Softgels**Blueprint Bryan Johnson**$48.23**213 rev1y ago](https://www.amazon.com/dp/B0FDXT3BTW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Aiwevon Premium Astaxanthin Softgels 12mg 120 Microalgae Based Antioxidant Supplement with Coconut Oil Supports Healthy Skin Vision Circulation & Joint Function High Quality Non GMO Formula**Aiwevon**$9.09**4.4★**▲ 337%**](https://www.amazon.com/dp/B0GY432QVR) [**Astaxanthin Supplement 12mg Softgels 120 Count Natural Microalgae Astaxanthin with MCT Oil Easy to Swallow No Strong Taste Antioxidant Support for Skin Eye Heart Joint Health Non-GMO Gluten Free**Aiwevon**$8.51**4.3★**▲ 322%**](https://www.amazon.com/dp/B0GWH7DCLF) [**14-in-1 Astaxanthin 12mg & Lutein 40mg with Zeaxanthin Supplements 6 Month Supply Fresh Microalgae Source Supports Eye Skin Antioxidant Joint Circulatory Health Non-GMO Gluten Free 180 Softgels**VivoNu**$23.76**4.5★**▲ 184%**](https://www.amazon.com/dp/B0G641K9KM) [**Super Antioxidants Supplement for Women & Men - High Potency Herbal & Fruit Blend with Acai Goji Pomegranate Elderberry & Resveratrol for Skin Care & Immune Support - Vegan & Non-GMO - 180 Capsules**Healths Harmony**$39.46**4.5★**▲ 56%**](https://www.amazon.com/dp/B0DJMQRFDM) [**Qunol Ultra CoQ10 100mg Softgels- 3x Better Absorption Antioxidant for Heart Health & Energy Production Coenzyme Q10 Vitamins and Supplements 3 Month Supply 90 Count**Qunol**$22.89**4.7★**▲ 56%**](https://www.amazon.com/dp/B0BL1Z8MVD)
**~~View all trending →~~**
## **What buyers say about antioxidants supplement**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**16%
*“Arrived as advertised, good quality”*
**Vitamin**8%
*“Great vitamins at a great value”*
**Eye-Hygiene**6%
*“HELP DRY EYE”*
**Value For Money**6%
*“Worth buying”*
**Ease Of Chewing/Swallowing**6%
*“Easy to swallow pill”*
**Ingredients-Overall**4%
*“CLEAN ingredients”*
**Heart Health**4%
*“my cholesterol is down”*
**Advertised Vs Actual Product**3%
*“As advertised”*
**Ease Of Use**3%
*“Easy to use”*
**Skin Health**3%
*“Works great for my skin”*
### **What buyers complain about **
**Size-Overall**6%
*“These capsules are extremely large”*
**Ingredients-Overall**6%
*“Unhealthy ingredients”*
**Side Effects**5%
*“Not good side effects for me”*
**Dosage**5%
*“Small dosage”*
**Color**5%
*“it's too orange”*
**Functionality-Overall**5%
*“Doesn't work”*
**Advertised Vs Actual Product**4%
*“Not as advertised”*
**Allergies**3%
*“Allergic reaction”*
**Value For Money**3%
*“Waste of money”*
**Quality-Overall**3%
*“complete junk”*
### **Top return reasons **
**Joint Pain**13%
**Vegan/Organic**13%
**Advertised Vs Actual Product**13%
**Color Fading/Discoloration**10%
**Vitamin**10%
**Certifications**7%
**Dosage**7%
**Side Effects**7%
**Stain Resistance**7%
**Color**3%
## **Common questions**
- **Is antioxidants supplement profitable to sell on Amazon United States?**
- The niche generates $349K/yr across 19 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -11.7%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the antioxidants supplement niche?**
- 17 brands and 577 sellers compete. The top 5 products take 69% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in antioxidants supplement?**
- Top complaints mined from reviews: Size-Overall, Ingredients-Overall, Side Effects. The return rate is 0.0%.
- **When does demand for antioxidants supplement peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the antioxidants supplement niche?**
- Listings span $4.67–$75.98; the average listing price is $24.91 (sweet spot $15–$100). The average incumbent carries 2,644 reviews — the moat a new listing must climb.
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