---
title: "Cod Liver Oil — £1.6M/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/cod-liver-oil"
last_updated: "2026-07-31T13:09:12.267Z"
locale: en
meta:
description: "Niche score 50/100 · £1.6M/yr market · 984K searches/yr · £9.22 avg price. Soft demand (-15.0% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · £1.6M/yr market · 984K searches/yr · £9.22 avg price. Soft demand (-15.0% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Cod Liver Oil — £1.6M/yr Amazon UK Niche (2026) - Flapen"
---
# **cod liver oil**
**Worth a look**
Shows low returns (0.0%), but soft demand (-15.0% this quarter) keeps it on the watch list.
Market size 88Growth 18Conversion 99Competition 26Returns 100Price range 27Avg price 27Brand share 44Review moat 25Quality gap 20
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****17.6%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Great****£1.6M**
£1.6M/yr · 984K searches
**Brand share**
**Okay****78%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Okay****£9.22**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****£4.61–£18.81**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Okay****70%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****4,477.67**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-15.0%**
90-day search growth — must beat 0% to launch
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.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **cod liver oil market data**
- **Units sold / yr**
- **150K–200K**
- avg 8,000–10,000/product
- **Revenue / yr**
- **£1.4M–£1.8M**
- units × avg price
- **Conversion rate**
- **17.6%**
- **Avg BSR**
- **#96**
- **Page quality**
- **0%**
- **Prime**
- **93%**
- **Sponsored**
- **87%**
- **Out of stock**
- **5.9%**
- **Avg brand age**
- **81 months**
- **Avg seller age**
- **166 days**
## **Competition & brand share**
The top 5 products take 70% of clicks — established leaders, but buyers still shop beyond them.
**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%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -15.0% search growth over the last 90 days.
23K18KSpike '24Spike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/cod-liver-oil/trend)
## **Top cod liver oil search terms**
- **cod liver oil capsules high strength**365K/yr-6.5%18.0% conv. - **cod liver oil**309K/yr-19.7%11.3% conv. - **cod liver oil capsules**162K/yr-15.5%15.1% conv. - **seven seas cod liver oil**42K/yr-35.2%6.9% conv. - **cod liver oil tablets**21K/yr-33.1%10.7% conv. - **codliver oil capsules 1000mg**12K/yr-2.1%19.4% conv. - **cod liver oil gelatine free**8K/yr-5.9%0.8% conv. - **cod liver oil capsules 1000mg**14K/yr-55.3%16.2% conv. - **seven seas cod liver oil capsules**9K/yr-24.1%10.0% conv. - **gelatine free cod liver oil**5K/yr+2.6%0.5% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/cod-liver-oil/search-terms)
## **Top cod liver 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.
0%10%£160K20%£320K30%£481K40%£641K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Natures Aid Cod Liver Oil 1000mg Softgels High Strength Omega-3 Fish Oil with Vitamins A & D Supports Immune System Heart Health Brain Vision Joints Non-GMO 180 Capsules**Natures Aid**£7.47**4.7★6,484 rev](https://www.amazon.co.uk/dp/B002F5EO6E) [2**Seven Seas Cod Liver Oil One-A-Day Omega-3 Fish Oil and Vitamin D 120 Capsules 4 Months Supply**Sevenseas**£7.41**4.7★7,936 rev](https://www.amazon.co.uk/dp/B008DZNOA2) [3**Natures Aid Cod Liver Oil 1000mg Softgels High Strength Omega-3 Fish Oil with Vitamins A & D Supports Immune System Heart Health Brain Vision Joints Non-GMO 90 Capsules**Natures Aid**£5.46**4.7★2,973 rev](https://www.amazon.co.uk/dp/B002F58P5K) [4**Cod Liver Oil High Strength 1000mg Heart Brain and Joint Healthcare Supplements Natural Rich Source of Omega 3 Fatty Acids | 120 Capsules**NutriVolv**£6.10**4.7★1,228 rev](https://www.amazon.co.uk/dp/B08Y8YBH8S) [5**Cod Liver Oil 1000mg 360 Capsules of High Strength Fish Oil Rich in Omega 3. Supports Heart Health Brain Health Eye Health and Normal Blood Pressure**Zipvit**£15.27**4.7★8,324 rev](https://www.amazon.co.uk/dp/B075D8ZDWF)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Pure Cod Liver Oil 1000mg | 360 Softgel Capsules | UK Made**Simply Supplements**£14.81**4,202 rev9mo ago](https://www.amazon.co.uk/dp/B0FT3GKYVD) [**Pure Cod Liver Oil 1000mg | 180 Softgel Capsules | UK Made**Simply Supplements**£8.23**905 rev9mo ago](https://www.amazon.co.uk/dp/B0FT3F4GJ6) [**Cod Liver Oil High Strength 1000mg Heart Brain and Joint Healthcare Supplements Natural Rich Source of Omega 3 Fatty Acids | 120 Capsules**NutriVolv**£6.10**1,228 rev5y ago](https://www.amazon.co.uk/dp/B08Y8YBH8S) [**Cod Liver Oil Softgels 1000mg - 180 Cod Liver Soft gels High Strength Softgels- Cod Liver Oil Rich in Omega 3 EPA DHA Fatty Acids + Vitamins A & D High Strength Fish Oil - UK Made by New Leaf**NEW LEAF PRODUCTS**£8.35**793 rev5y ago](https://www.amazon.co.uk/dp/B08MV7XFJH) [**Cod Liver Oil Capsules High Strength | 2000mg | 360 Softgel Pills | Rich in Omega 3 Vitamins A & D | Supplement with 171mg of DHA and 151mg of EPA | by Horbaach**Horbäach**£18.81**1,730 rev6y ago](https://www.amazon.co.uk/dp/B0883YFCMV)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Pure Cod Liver Oil 1000mg | 360 Softgel Capsules | UK Made**Simply Supplements**£14.81**4.7★**▲ 87%**](https://www.amazon.co.uk/dp/B0FT3GKYVD) [**Seven Seas Cod Liver Oil One-A-Day Omega-3 Fish Oil and Vitamin D 60 Capsules 2 Months Supply**SEVEN SEAS**£5.01**4.7★**▲ 40%**](https://www.amazon.co.uk/dp/B0021L95GQ) [**Cod Liver Oil Capsules High Strength 1000mg - 180 Capsules | UK Made Fish Oils - 6 Month Supply | Rich Source of Omega 3 Essential Fatty Acids | High EPA DHA - Made in the UK for Hellenia**Hellenia**£7.40**4.7★**▲ 39%**](https://www.amazon.co.uk/dp/B004708BIC) [**Cod Liver Oil Capsules High Strength 2000mg - Rich in EPA DHA Omega 3 & Vitamins D and A - 60 Softgel Tablets - 1000mg Arctic Cod Liver Oil per Capsule - Odourless & Burp-Free Fish Oil - UK Made**SuperSelf**£7.93**4.5★**▲ 18%**](https://www.amazon.co.uk/dp/B086XMBFTW) [**Natures Aid Cod Liver Oil 1000mg Softgels High Strength Omega-3 Fish Oil with Vitamins A & D Supports Immune System Heart Health Brain Vision Joints Non-GMO 90 Capsules**Natures Aid**£5.46**4.7★**▲ 17%**](https://www.amazon.co.uk/dp/B002F58P5K)
**~~View all trending →~~**
## **What buyers say about cod liver oil**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**26%
*“Good Value”*
**Quality-Overall**24%
*“Definitely a solid quality product”*
**Advertised Vs Actual Product**6%
*“Arrived exactly as described”*
**Joint Pain**5%
*“Helping with joint pain”*
**Ease Of Chewing/Swallowing**5%
*“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”*
**Ease Of Use**4%
*“Easy to take”*
**Taste-Overall**3%
*“No harsh taste, no struggle”*
**Vitamin**3%
*“arent difficult to swallow like most vitamins”*
**Size-Overall**2%
*“Size is good”*
**Nutritional Content**2%
*“Good supplement”*
### **What buyers complain about **
**Taste-Overall**14%
*“The aftertaste is awful”*
**Size-Overall**8%
*“The capsules are a bit large”*
**Smell**7%
*“The container smells, as usual,”*
**Dosage**6%
*“this is NOT per capsule”*
**Oily/Greasy**5%
*“Cod liver oil”*
**Quality-Overall**4%
*“Bad quality tablets”*
**Ease Of Chewing/Swallowing**4%
*“Capsules are a bit large to swallow”*
**Value For Money**4%
*“But can get them cheaper in boots”*
**Advertised Vs Actual Product**4%
*“Misleading photo”*
**Vitamin**3%
*“Im not happy with this product Super Strength Omega 3 Fish Oil 2000mg”*
### **Top return reasons **
**Certifications**100%
## **Common questions**
- **Is cod liver oil profitable to sell on Amazon United Kingdom?**
- The niche generates £1.6M/yr across 15 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -15.0%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the cod liver oil niche?**
- 12 brands and 68 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 78% of demand.
- **What do buyers complain about in cod liver oil?**
- Top complaints mined from reviews: Taste-Overall, Size-Overall, Smell. The return rate is 0.0%.
- **When does demand for cod liver oil peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the cod liver oil niche?**
- Listings span £4.61–£18.81; the average listing price is £9.22 (sweet spot $15–$100). The average incumbent carries 4,478 reviews — the moat a new listing must climb.
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