---
title: "Heartburn Liquid — £607K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/heartburn-liquid"
last_updated: "2026-07-31T18:28:22.852Z"
locale: en
meta:
description: "Niche score 44/100 · £607K/yr market · 314K searches/yr · £8.85 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · £607K/yr market · 314K searches/yr · £8.85 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Heartburn Liquid — £607K/yr Amazon UK Niche (2026) - Flapen"
---
# **heartburn liquid**
**Skip it**
Brand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Market size 64Growth 17Conversion 100Competition 25Returns 100Price range 18Avg price 25Brand share 4Review moat 73Quality gap 21
**Conversion**
**Incredible****21.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Review moat**
**Good****569.78**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Good****£607K**
£607K/yr · 314K searches
**Competition**
**Bad****70%**
top-5 click share — a locked-up shelf
**Avg price**
**Okay****£8.85**
avg listing price — sweet spot $15–$100
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Price range**
**Bad****£3.94–£17.39**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-16.1%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****98%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, heartburn liquid is a £607K/yr Amazon United Kingdom market (314K searches/yr). The top 5 brands hold 98% of demand. Verdict: Skip it — 44/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **heartburn liquid market data**
- **Units sold / yr**
- **60K–80K**
- avg 4,000–5,000/product
- **Revenue / yr**
- **£531K–£708K**
- units × avg price
- **Conversion rate**
- **21.8%**
- **Avg BSR**
- **#45**
- **Page quality**
- **0%**
- **Prime**
- **78%**
- **Sponsored**
- **83%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **77 months**
- **Avg seller age**
- **175 days**
## **Competition & brand share**
The top 5 products capture 70% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **▲rising
**Sellers**
**81**
**Top-5 brand share**
**98%**
Top 20: 100%
**Top-5 click share**
**70%**
Top 20: 100%
**Open market**
**0%**
- Gaviscon85% - ANCIENT CARE CREATING HEALTHIER LIVES5% - Care3% - Pepto Bismol3% - Generic2% - Reckitt Benckiser Healthcare (UK) Ltd2%
## **Demand**
Weekly Amazon search volume, last 42 weeks — -16.1% search growth over the last 90 days.
7K5KOct '25Nov '25Jan '26Mar '26Apr '26Jun '26
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/heartburn-liquid/trend)
## **Top heartburn liquid search terms**
- **gaviscon double action liquid**145K/yr-22.3%20.6% conv. - **gaviscon sachets**48K/yr-0.3%23.1% conv. - **gaviscon liquid**30K/yr-30.3%15.2% conv. - **indigestion liquid**19K/yr-3.8%11.2% conv. - **heartburn liquid**19K/yr-5.9%10.2% conv. - **antacid liquid**11K/yr-13.6%11.4% conv. - **acidex**8K/yr-13.0%3.8% conv. - **acidex advance liquid aniseed 500ml**6K/yr-7.4%3.3% conv. - **gaviscon aniseed**7K/yr-16.2%15.9% conv. - **gaviscon liquid sachets**4K/yr+10.5%12.2% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/heartburn-liquid/search-terms)
## **Top heartburn liquid 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%£61K20%£121K30%£182K40%£243K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Gaviscon Double Action Sachets Mint 24 X 10ml Heartburn Relief Acid Reflux Indigestion Liquid Gerd Gastro Resistant Gets To Work Instantly Lasts 2X Longer Antacids Digestion and Nausea**Gaviscon**£8.09**4.7★3,562 rev](https://www.amazon.co.uk/dp/B07P48HF3B) [2**Gaviscon Double Action Mint Liquid 500ml - Heartburn & Acid Reflux Relief Fast-Acting Formula Long-Lasting Comfort Suitable for Pregnancy Digestion and Nausea (500 ml (Pack of 1))**Gaviscon**£10.05**4.8★902 rev](https://www.amazon.co.uk/dp/B0C74VSP4V) [3**Gaviscon Double Action Aniseed Liquid 500ml - Heartburn Indigestion Stomach Pain Acid Reflux Relief Digestive Health Long-Lasting Antacid Pregnancy Safe**Gaviscon**£10.18**4.8★266 rev](https://www.amazon.co.uk/dp/B0DX2LDB6Q) [4**Gaviscon Double Action Heartburn & Indigestion Relief Mint Flavour Liquid Sachets 10ml Pack of 48**Gaviscon**£15.85**4.8★616 rev](https://www.amazon.co.uk/dp/B0C14JXBQ4) [5**Gaviscon Original Aniseed Liquid 500ml - Heartburn & Acid Reflux Relief Fast-Acting Formula Protective Barrier Long-Lasting Comfort Suitable for Pregnancy Antacids Digestion and Nausea**Gaviscon**£9.28**4.8★266 rev](https://www.amazon.co.uk/dp/B0DX2J1C8D)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Acidex Aniseed 500ml Sugar Free Liquid for Fast Acting Heartburn Indigestion Acid Reflux & Nausea Relief Suitable for Pregnancy & Breast Feeding Pack of 2**Generic**£15.57**25 rev8mo ago](https://www.amazon.co.uk/dp/B0FY7TRPQG) [**Peptac Liquid Aniseed 500 ml Sugar-Free Indigestion Relief - Free Measuring Cup - Fast-Acting Heartburn Indigestion Acid Reflux and Nausea Relief**ANCIENT CARE CREATING HEALTHIER LIVES**£7.99**106 rev1y ago](https://www.amazon.co.uk/dp/B0F29SZ5ZT) [**Gaviscon Original Peppermint Liquid 500ml - Heartburn & Acid Reflux Relief Fast-Acting Formula Protective Barrier Long-Lasting Comfort Suitable for Pregnancy Antacids Digestion and Nausea**Gaviscon**£8.63**77 rev1y ago](https://www.amazon.co.uk/dp/B0F24MD29G) [**Gaviscon Double Action Aniseed Liquid 500ml - Heartburn Indigestion Stomach Pain Acid Reflux Relief Digestive Health Long-Lasting Antacid Pregnancy Safe**Gaviscon**£10.18**266 rev1y ago](https://www.amazon.co.uk/dp/B0DX2LDB6Q) [**Gaviscon Original Aniseed Liquid 500ml - Heartburn & Acid Reflux Relief Fast-Acting Formula Protective Barrier Long-Lasting Comfort Suitable for Pregnancy Antacids Digestion and Nausea**Gaviscon**£9.28**266 rev1y ago](https://www.amazon.co.uk/dp/B0DX2J1C8D)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Peptac Liquid Aniseed 500 ml Sugar-Free Indigestion Relief - Free Measuring Cup - Fast-Acting Heartburn Indigestion Acid Reflux and Nausea Relief**ANCIENT CARE CREATING HEALTHIER LIVES**£7.99**4.7★**▲ 111%**](https://www.amazon.co.uk/dp/B0F29SZ5ZT) [**Gaviscon Double Action Aniseed Liquid 250ml - Fast Heartburn & Indigestion Relief Convenient Sachets Antacids for Effective Digestion Acid Reflux Relief Pregnancy Safe**Gaviscon**£7.58**4.8★**▲ 106%**](https://www.amazon.co.uk/dp/B0DX2M9QHV) [**Acidex Aniseed 500ml Sugar Free Liquid for Fast Acting Heartburn Indigestion Acid Reflux & Nausea Relief Suitable for Pregnancy & Breast Feeding Pack of 2**Generic**£15.57**4.2★**▲ 81%**](https://www.amazon.co.uk/dp/B0FY7TRPQG) [**Pepto-Bismol for Nausea Heartburn Indigestion Upset Stomach and Diarrhoea Relief 5 Symptom Relief 120ml**Pepto Bismol**£3.94**4.4★**▲ 67%**](https://www.amazon.co.uk/dp/B01BC45HRI) [**Care Heartburn & Indigestion Relief Peppermint Flavour Oral Suspension Fast-Acting Soothing Formula for Acid Reflux and Indigestion Gentle on Stomach Long-Lasting Relief 1 x 500ml**Care**£6.50**4.5★**▲ 46%**](https://www.amazon.co.uk/dp/B0D3SGFTXD)
**~~View all trending →~~**
## **What buyers say about heartburn liquid**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**13%
*“Good Price”*
**Quality-Overall**11%
*“Excellent product”*
**Efficiency**9%
*“Effective”*
**Advertised Vs Actual Product**9%
*“as advertised”*
**Heart Health**9%
*“Very good for heart burn”*
**Acid Regulator/Stomach Ache Relief**8%
*“Acid reflux relief”*
**Regulates Digestion**7%
*“Indigestion Relief”*
**Taste-Overall**7%
*“Tastes minty, a little medicinely”*
**Ease Of Use**5%
*“easy to use”*
**Flavor**3%
*“Nice flavor”*
### **What buyers complain about **
**Taste-Overall**14%
*“same bottle different taste for market one”*
**Value For Money**10%
*“bit expensive”*
**Functionality-Overall**5%
*“Didnt work for me”*
**Advertised Vs Actual Product**5%
*“Terrible TV advert”*
**Size-Overall**4%
*“I thought the bottle would be bigger”*
**Regulates Digestion**4%
*“Acid reflux”*
**Acid Regulator/Stomach Ache Relief**4%
*“But I have a very sensitive stomach”*
**Side Effects**3%
*“I had nausea to the point of thinking I was going to vomit”*
**Leak-Proof**3%
*“Parcel was leaking one of bottles were cracked be careful when opening package as I did cut myself on the glass of the bottle”*
**Flavor**3%
*“I wish I'd picked the mint flavour though”*
### **Top return reasons **
**Leak-Proof**59%
**Flavor**10%
**Maintenance And Repair**4%
**Contamination**3%
**Value For Money**2%
**Compatibility-Overall**2%
**Taste-Overall**2%
**Certifications**2%
**Acid Regulator/Stomach Ache Relief**2%
**Portability**2%
## **Common questions**
- **Is heartburn liquid profitable to sell on Amazon United Kingdom?**
- The niche generates £607K/yr across 18 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -16.1%. Flapen's verdict: Skip it (44/100).
- **How competitive is the heartburn liquid niche?**
- 6 brands and 81 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 98% of demand.
- **What do buyers complain about in heartburn liquid?**
- Top complaints mined from reviews: Taste-Overall, Value For Money, Functionality-Overall. The return rate is 0.1%.
- **What does it cost to enter the heartburn liquid niche?**
- Listings span £3.94–£17.39; the average listing price is £8.85 (sweet spot $15–$100). The average incumbent carries 570 reviews — the moat a new listing must climb.
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