---
title: "Phenergan — £11K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/phenergan"
last_updated: "2026-07-31T19:36:27.462Z"
locale: en
meta:
description: "Niche score 40/100 · £11K/yr market · 117K searches/yr · £7.30 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 40/100 · £11K/yr market · 117K searches/yr · £7.30 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Phenergan — £11K/yr Amazon UK Niche (2026) - Flapen"
---
# **phenergan**
**Skip it**
A small market ($11K/yr) — this niche doesn't clear our bar today.
Market size 3Growth 56Conversion 16Competition 51Returns 100Price range 13Avg price 20Brand share 57Review moat 42Quality gap 20
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Growth**
**Good****+29.6%**
90-day search growth — must beat 0% to launch
**Competition**
**Good****54%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Okay****2,329.13**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Bad****£7.30**
avg listing price — sweet spot $15–$100
**Conversion**
**Bad****1.3%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Bad****£1.97–£16.99**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****£11K**
£11K/yr · 117K searches
According to Flapen's Amazon United Kingdom niche tracking, phenergan is a £11K/yr Amazon United Kingdom market (117K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 40/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **phenergan market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **£37K–£44K**
- units × avg price
- **Conversion rate**
- **1.3%**
- **Avg BSR**
- **#50**
- **Page quality**
- **0%**
- **Prime**
- **74%**
- **Sponsored**
- **61%**
- **Out of stock**
- **8.6%**
- **Avg brand age**
- **49 months**
- **Avg seller age**
- **172 days**
## **Competition & brand share**
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▲rising
**Sellers**
**118**
**Top-5 brand share**
**71%**
Top 20: 100%
**Top-5 click share**
**54%**
Top 20: 96%
**Open market**
**25%**
- Generic32% - Benadryl17% - Amazon Basic Care8% - Vividrin7% - Galpharm6% - Sentanase4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +29.6% search growth over the last 90 days.
8K6KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep, Oct · busiest ÷ quietest = 2.7×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/phenergan/trend)
## **Top phenergan search terms**
- **chlorphenamine antihistamine tablets**26K/yr+144.1%2.0% conv. - **chlorphenamine**37K/yr-27.0%0.6% conv. - **chlorphenamine maleate**15K/yr+77.7%0.6% conv. - **chlorphenamine maleate 4mg**22K/yr-31.4%0.5% conv. - **chlorphenamine tablets**4K/yr+122.8%0.0% conv. - **chlorphenamine 4mg**5K/yr+50.1%0.7% conv. - **piriton chlorphenamine maleate**3K/yr+63.8%0.3% conv. - **chlorpheniramine**3K/yr-13.1%0.7% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/phenergan/search-terms)
## **Top phenergan 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%£1K20%£2K30%£3K40%£4K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted
All 23 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Hayfever & Allergy Antihistamine | Hayfever Dust Pets and Hives | 60 Tablets**Generic**£13.07**4.9★65 rev](https://www.amazon.co.uk/dp/B0GJQS513J) [2**Benadryl Allergy One A Day 10 Mg Tablets - Effective and Long-Lasting Relief - 30 Count**Benadryl**£6.76**4.6★8,541 rev](https://www.amazon.co.uk/dp/B01CGH2FTI) [3**Amazon Basic Care Hayfever & Allergy Relief 10mg Tablets Cetirizine Hydrochloride 30 Tablets (Pack of 1) - Effective Relief from Hayfever Skin Allergies Dust Allergies and Pet Allergies**Amazon Basic Care**£2.77**4.6★398 rev](https://www.amazon.co.uk/dp/B0FBM9PJSJ) [4**Vividrin Allergy Relief Tablets - Cetirizine Antihistamine Tablets 10mg x 30 Tablets Effective Relief for Hayfever Sore & Itchy Eyes Pet and Skin Allergies Suitable for Adults and Kids 6+**Vividrin**£4.17**4.8★38 rev](https://www.amazon.co.uk/dp/B0FS7GKKVW) [5**Galpharm Treathay Hayfever Relief Fexofenadine Hydrochloride Tablets 120mg Up to 24hrs Relief from Hayfever Sneezing Itchy Eyes and Runny Noses 30 Tablets**Galpharm**£4.93**4.7★3,064 rev](https://www.amazon.co.uk/dp/B09X5MCT4D)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Hayfever & Allergy Antihistamine | Hayfever Dust Pets and Hives | 60 Tablets**Generic**£13.07**65 rev8mo ago](https://www.amazon.co.uk/dp/B0GJQS513J) [**Hayfever & Allergy Antihistamine for Hayfever Dust Pets and Hives | 60 Tablets**Generic**£12.66**13 rev8mo ago](https://www.amazon.co.uk/dp/B0GY95NR66) [**Hayfever & Allergy Antihistamine for Hayfever Dust Pets and Hives | 60 Tablets**Generic**£12.87**2 rev8mo ago](https://www.amazon.co.uk/dp/B0H29VGQK8) [**Hayfever & Allergy Antihistamine Tablets | Relief for Hayfever Dust Pet Allergies & Hives | 60 x Tablets**Generic**£12.47**8 rev8mo ago](https://www.amazon.co.uk/dp/B0H1DNTXY2) [**Vividrin Allergy Relief Tablets - Cetirizine Antihistamine Tablets 10mg x 30 Tablets Effective Relief for Hayfever Sore & Itchy Eyes Pet and Skin Allergies Suitable for Adults and Kids 6+**Vividrin**£4.17**38 rev10mo ago](https://www.amazon.co.uk/dp/B0FS7GKKVW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Hayfever & Allergy Antihistamine Tablets | Relief for Hayfever Dust Pet Allergies & Hives | 60 x Tablets**Generic**£12.47**4.5★**▲ 96%**](https://www.amazon.co.uk/dp/B0H1DNTXY2) [**Hayfever & Allergy Antihistamine for Hayfever Dust Pets and Hives | 60 Tablets**Generic**£12.66**4.9★**▲ 96%**](https://www.amazon.co.uk/dp/B0GY95NR66) [**Hayfever & Allergy Antihistamine for Hayfever Dust Pets and Hives | 60 Tablets**Generic**£12.87**5.0★**▲ 96%**](https://www.amazon.co.uk/dp/B0H29VGQK8) [**180 Hayfever & Allergy Relief Cetirizine10mg Tablets Non-Drowsy Antihistamine Tablets | JJH Medical Hay Fever Tracker Bundle GSL**JJH Medical**£8.02**4.9★**▲ 94%**](https://www.amazon.co.uk/dp/B0GT11LK15) [**Vividrin Allergy Relief Tablets - Cetirizine Antihistamine Tablets 10mg x 30 Tablets Effective Relief for Hayfever Sore & Itchy Eyes Pet and Skin Allergies Suitable for Adults and Kids 6+**Vividrin**£4.17**4.8★**▲ 88%**](https://www.amazon.co.uk/dp/B0FS7GKKVW)
**~~View all trending →~~**
## **What buyers say about phenergan**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**24%
*“Excellent value for money”*
**Fever Relief**12%
*“Great for hayfever”*
**Quality-Overall**12%
*“Ive found them to be reliable”*
**Allergies**11%
*“Great allergy relief, very effective”*
**Advertised Vs Actual Product**9%
*“As described”*
**Efficiency**8%
*“Works well”*
**Dosage**2%
*“The once-daily dosing is convenient”*
**Ease Of Chewing/Swallowing**2%
*“Easy to swallow”*
**Side Effects**2%
*“These tablets were great at stopping all of my usual symptoms”*
**Ease Of Use**2%
*“Ease of use”*
### **What buyers complain about **
**Functionality-Overall**18%
*“Didn't work”*
**Allergies**17%
*“Itching”*
**Fever Relief**8%
*“Doesn't manage my hay fever completely”*
**Value For Money**7%
*“expensive”*
**Side Effects**5%
*“leave me feeling incredibly unwell”*
**Dosage**3%
*“it's much more costly to be yamming multiple pills per day. on doctors advice I can take 3x 120mg per day.”*
**Sinus Relief**2%
*“it did not do much for the stuffiness in my nose”*
**Sleep Quality**2%
*“Never made me sleepy”*
**Age Suitability**1%
*“It doesn't state age limit on box”*
**Stale/Rotten/Spoiled**1%
*“Rubbish product”*
## **Common questions**
- **Is phenergan profitable to sell on Amazon United Kingdom?**
- The niche generates £11K/yr across 23 tracked products. 4 of 5 products launched in the last 360 days are still selling. 90-day search growth is +29.6%. Flapen's verdict: Skip it (40/100).
- **How competitive is the phenergan niche?**
- 16 brands and 118 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in phenergan?**
- Top complaints mined from reviews: Functionality-Overall, Allergies, Fever Relief. The return rate is 0.0%.
- **When does demand for phenergan peak?**
- Demand peaks in Sep–Oct; the busiest month runs 2.7× the quietest.
- **What does it cost to enter the phenergan niche?**
- Listings span £1.97–£16.99; the average listing price is £7.30 (sweet spot $15–$100). The average incumbent carries 2,329 reviews — the moat a new listing must climb.
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