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Cod Liver Oil

Cod Liver Oil shows low returns (0.0%), but soft demand (-15.0% this quarter) keeps it on the watch list.

Flapen Score

50
Worth a look
Market size 88Growth 18Conversion 99Competition 26Returns 100Price range 27Avg price 27Brand share 44Review moat 25Quality gap 20
This niche Category average

Is Cod Liver Oil profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Cod Liver Oil is a £1.6M/yr Amazon United Kingdom market (984K searches/yr). The top 5 brands hold 78% of demand. Verdict: Worth a look — 50/100.

Cod Liver Oil: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved -15.0% over the last 90 days and 17.6% of searches end in a purchase.

£1.6M

revenue / yr

Units sold / yr200K
Search volume / yr-15.0%984K
Conversion rate17.6%
Avg price£9.22

Who owns the niche?

The top 5 brands hold 78% of demand, so 22% of the market is open.

22%

open market share

Brands · sellers12 · 68
Top-5 product click share70%
Open market22%
Avg brand age81 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.7★ — the gap to enter on.

0/100

page quality · 15 products

Sponsored placement87%
New entrants (1y)2· 2 succeeded
Avg rating4.7★
Avg reviews4,478

Top Cod Liver Oil products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.

£0£160K£320K£481K£641K1001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

12 falling

Sellers

68

Top-5 brand share

78%

Top 20: 100%

Top-5 click share

70%

Top 20: 100%

Open market

17%

  • Natures Aid42%
  • Sevenseas12%
  • Zipvit10%
  • NutriVolv9%
  • SEVEN SEAS5%
  • NEW LEAF PRODUCTS5%
  • Open — no brand owns it (6 brands, 17%)

Cod Liver Oil demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume984KCVR17.6%Products15Brands12Top 5 Brands78%OOS Rate5.9%Rating4.7★Reviews4,478Avg BSR#96
23K18KSpike '24Spike '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Top Cod Liver Oil search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • cod liver oil capsules high strength365K/yr
  • cod liver oil309K/yr
  • cod liver oil capsules162K/yr
  • seven seas cod liver oil42K/yr
  • cod liver oil tablets21K/yr
  • codliver oil capsules 1000mg12K/yr
  • cod liver oil gelatine free8K/yr
  • cod liver oil capsules 1000mg14K/yr
  • seven seas cod liver oil capsules9K/yr
  • gelatine free cod liver oil5K/yr

What reviews say buyers love and hate about Cod Liver Oil

What buyers mention most, as a share of all reviews.

What buyers love

81% of reviews
Value For Money26%

Good Value

Quality-Overall24%

Definitely a solid quality product

Advertised Vs Actual Product6%

Arrived exactly as described

Joint Pain5%

Helping with joint pain

Ease Of Chewing/Swallowing5%

The capsules are easy enough to take and, importantly, I havent experienced the unpleasant fishy aftertaste or repeat burps that can sometimes come with fish oil supplements

What buyers complain about

59% of reviews
Taste-Overall14%

The aftertaste is awful

Size-Overall8%

The capsules are a bit large

Smell7%

The container smells, as usual,

Dosage6%

this is NOT per capsule

Oily/Greasy5%

Cod liver oil

Cod Liver Oil return rate & reasons

Why buyers send it back, as a share of all return requests.

0.0%

Return rate

0%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Certifications
100%

Common Cod Liver Oil questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Cod Liver Oil 50/100 on Amazon United Kingdom — Worth a look. The niche generates £1.6M/yr across 15 tracked products. 2 of 2 products launched in the last 360 days are still selling. Search demand moved -15.0% over the last 90 days.
Search demand for Cod Liver Oil on Amazon United Kingdom is steady year-round — the busiest month runs 1.4× the quietest.