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.

antioxidants supplement

Worth a look

Shows low returns (0.0%), but soft demand (-11.7% this quarter) keeps it on the watch list.

Returns

Incredible0.0%

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

Good71%

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

Market size

Good$349K

$349K/yr · 341K searches

Conversion

Good4.1%

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

Review moat

Okay2,643.68

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay69%

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

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

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.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top antioxidants supplement search terms

antioxidant nutritional supplements78K/yr -8.7%2.1% conv.
antioxidant65K/yr +5.0%2.6% conv.
antioxidants supplement78K/yr -48.8%2.0% conv.
antioxidants22K/yr +1.1%1.9% conv.
antioxidant supplement16K/yr +27.8%1.5% conv.
antioxidant blend13K/yr -10.3%7.5% conv.
super antioxidants supplements10K/yr +29.7%5.4% conv.
anti oxidant supplement12K/yr -18.3%3.3% conv.
antioxidant supplements9K/yr +15.8%1.1% conv.
antioxidant vitamins5K/yr +46.9%1.1% conv.

All 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.

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

NOW Supplements Super Antioxidants with Herbal Extracts and a Broad Spectrum of Flavonoids for Immune Support 120 Veg Capsules

NOW Foods$21.104.6★1,125 rev

Nutricost Super Antioxidants (1000mg) 120 Capsules 60 Servings

Nutricost$16.534.5★92 rev

Carlyle Antioxidants Supplement | 100 Caplets | Nutritional Complex

Carlyle$9.994.6★402 rev

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$18.734.5★1,355 rev

21st Century Ace Antioxidant Tablets 75Count

21st Century$8.114.6★783 rev

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$9.0924 rev

2mo ago

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$8.5134 rev

2mo ago

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$23.76513 rev

7mo ago

Nutricost Super Antioxidants (1000mg) 120 Capsules 60 Servings

Nutricost$16.5392 rev

1y ago

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$48.23213 rev

1y ago

What buyers say about antioxidants supplement

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

What buyers love

Quality-Overall16%

“Arrived as advertised, good quality”

Vitamin8%

“Great vitamins at a great value”

Eye-Hygiene6%

“HELP DRY EYE”

Value For Money6%

“Worth buying”

Ease Of Chewing/Swallowing6%

“Easy to swallow pill”

Ingredients-Overall4%

“CLEAN ingredients”

Heart Health4%

“my cholesterol is down”

Advertised Vs Actual Product3%

“As advertised”

Ease Of Use3%

“Easy to use”

Skin Health3%

“Works great for my skin”

What buyers complain about

Size-Overall6%

“These capsules are extremely large”

Ingredients-Overall6%

“Unhealthy ingredients”

Side Effects5%

“Not good side effects for me”

Dosage5%

“Small dosage”

Color5%

“it's too orange”

Functionality-Overall5%

“Doesn't work”

Advertised Vs Actual Product4%

“Not as advertised”

Allergies3%

“Allergic reaction”

Value For Money3%

“Waste of money”

Quality-Overall3%

“complete junk”

Top return reasons

Joint Pain13%

Vegan/Organic13%

Advertised Vs Actual Product13%

Color Fading/Discoloration10%

Vitamin10%

Certifications7%

Dosage7%

Side Effects7%

Stain Resistance7%

Color3%

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.