Is fish oil profitable to sell on Amazon United States?

The niche generates $52.7M/yr across 32 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -7.2%. Flapen's verdict: Worth a look (64/100).

How competitive is the fish oil niche?

16 brands and 161 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 67% of demand.

What do buyers complain about in fish oil?

Top complaints mined from reviews: Taste-Overall, Size-Overall, Smell. The return rate is 0.0%.

When does demand for fish oil peak?

Demand is steady year-round — the busiest month runs 1.2× the quietest.

What does it cost to enter the fish oil niche?

Listings span $7.42–$71.21; the average listing price is $23.91 (sweet spot $15–$100). The average incumbent carries 22,032 reviews — the moat a new listing must climb.

fish oil

Worth a look

Shows a $52.7M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size

Incredible$52.7M

$52.7M/yr · 22.4M searches

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$23.91

avg listing price — sweet spot $15–$100

Conversion

Great9.9%

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

Price range

Great$7.42–$71.21

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

Brand share

Good67%

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

Competition

Good49%

top-5 click share — leaders hold, buyers still browse

Growth

Bad-7.2%

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

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Review moat

Bad22,031.97

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, fish oil is a $52.7M/yr Amazon United States market (22.4M searches/yr). The top 5 brands hold 67% of demand. Verdict: Worth a look — 64/100.

Data updated Jul 26, 2026 · scored weekly · How we score niches

fish oil market data

Units sold / yr: 1.0M–1.0M; avg 60,000–80,000/product
Revenue / yr: $23.9M–$23.9M; units × avg price
Conversion rate: 9.9%
Avg BSR: #72
Page quality: 0%
Prime: 100%
Sponsored: 78%
Out of stock: 0.0%
Avg brand age: 52 months
Avg seller age: 155 days

Competition & brand share

The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 rising

Sellers

161

Top-5 brand share

67%

Top 20: 100%

Top-5 click share

49%

Top 20: 86%

Open market

26%

Nature's Bounty21%
Sports Research15%
Nature Made13%
MAV NUTRITION10%
NOW Foods8%
Nordic Naturals8%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -7.2% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.2×

Open Trend

Top fish oil search terms

omega 36.0M/yr -6.7%6.0% conv.
fish oil4.8M/yr -3.4%11.7% conv.
omega 3 fish oil3.1M/yr -3.5%7.7% conv.
fish oil omega 3 supplements2.0M/yr -11.0%11.3% conv.
omega 3 supplement for women1.1M/yr -21.5%4.7% conv.
omega 3 supplements575K/yr -5.9%6.0% conv.
omega504K/yr +1.2%2.5% conv.
omega 3 fatty acid supplements342K/yr -16.2%5.9% conv.
fish oil supplements for women244K/yr -45.0%9.2% conv.
omega 3 epa dha133K/yr -11.3%4.5% conv.

All search terms

Top fish oil 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Natures Bounty Fish Oil Omega 3 Supplements - Supports Heart Health 1200 Mg Fish Oil Omega-3 200 Softgels (Pack of 1)

Nature's Bounty$12.704.7★77,158 rev

Sports Research Omega-3 Fish Oil 1250 - Triple Strength Fish Oil Supplement from Wild Alaska Pollock - MSC Certified Sustainable Non-GMO Soy Free - 90 Softgel Capsules

Sports Research$26.974.7★61,137 rev

MAV NUTRITION$34.124.6★30,234 rev

NatureWise Extra-Strength Omega 3 Fish Oil Supplement - 1000mg per Serving - 600 EPA & 400 DHA and Vitamin E - Sustainably Sourced Fish Oil - Lemon Flavor - 60 Softgels[1-Month Supply]

NatureWise$8.514.7★9,828 rev

Nutricost Omega 3 Fish Oil (2500MG) 120 Softgels 40 Servings

Nutricost$20.314.7★3,565 rev

Newest

by launch date

Nature Made Fish Oil Omega 3 Supplements 2000mg Per Serving Softgels Omega 3 Fish Oil for Heart Health Support 250 Softgels

Nature Made$25.46555 rev

10mo ago

Omega 3 Fish Oil 3600 mg - Omega 3 Supplement | EPA & DHA - Heavy Metals Tested - Heart Brain & Joint Support - Purified Fish Oil for Men & Women - Lab Tested - Lemon Flavored - 90 Softgels

NUTRAHARMONY$22.351,009 rev

1y ago

Omega 3 Fish Oil with Vitamin D3 K2 300 Lemon Flavored Burpless Softgels | High EPA & DHA rTG Formula with CoQ10 & Astaxanthin | Gluten-Free Non-GMO

Arofum$20.60975 rev

1y ago

Natures Bounty Omega 3 Plant-Based Omega 3 Fatty Acid Supplement 520mg Supports Whole Body Health Including Heart Skin Joint 30 Vegetarian Softgels Fish Oil Alternative

Nature's Bounty$13.59789 rev

2y ago

NatureWise Extra-Strength Omega 3 Fish Oil Supplement - 1000mg per Serving - 600 EPA & 400 DHA and Vitamin E - Sustainably Sourced Fish Oil - Lemon Flavor - 60 Softgels[1-Month Supply]

NatureWise$8.519,828 rev

3y ago

What buyers say about fish oil

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

What buyers love

Quality-Overall25%

“The capsules are good quality”

Value For Money10%

“Fair price”

Vitamin7%

“Best vitamins ever”

Ease Of Chewing/Swallowing6%

“Still no problem swallowing”

Taste-Overall5%

“no horrible taste or smell”

Advertised Vs Actual Product5%

“As described”

Heart Health3%

“Lowers your cholesterol level”

Nutritional Content3%

“It is good for my health”

Dosage3%

“The dosage is strong”

Smell2%

“No bad smell”

What buyers complain about

Taste-Overall13%

“Bad Aftertaste”

Size-Overall13%

“They are HUGE”

Smell7%

“Smells bad”

Dosage5%

“Dosage is very high”

Ease Of Chewing/Swallowing4%

“Hurts to swallow”

Value For Money4%

“Too expensive”

Side Effects3%

“Made me nauseas and have headaches”

Quality-Overall3%

“Product was not the same quality as usual”

Acid Regulator/Stomach Ache Relief2%

“Upsets my stomach”

Advertised Vs Actual Product2%

“Deceptive advertising”

Top return reasons

Value For Money21%

Size-Overall18%

Smell9%

Ingredients-Overall8%

Functionality-Overall7%

Oily/Greasy6%

Dosage4%