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Phenergan

Fail

Shoppers spend an estimated $11K a year here, so Phenergan is a Fail.

Flapen Score
40
40 / 100
Ranks 1,670 of 2,035 Health & Personal Care niches · −8 vs the category median of 48
Market size
£11K/yr117K searches / yr
90-day growth
+29.6%search demand this quarter
Competition
54%top-5 click share · 16 brands · 118 sellers

Flapen Score

Phenergan against its category

The dotted line is the Health & Personal Care average. Past it, Phenergan is stronger. Inside it, weaker.

40Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Phenergan market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Phenergan 117K times last year and spent an estimated £11K. The top 5 brands take 71% of clicks. Demand peaks in Sep–Oct. Flapen scores it 40 out of 100, a Fail.

01 · Demand

An estimated 1.3% of those searches ended in a purchase.

Shoppers searched for this 117K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 1.3% of those searches ended in a purchase. Searches in the last 90 days moved +29.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated £11K a year.

Searches, last 12 months
117K
Growth, 90 days vs prior 90
+29.6%
Conversion, latest week
1.3%
Market size, estimated
£11Ka year
Peak month
October2.7× the quietest month
Top search term
chlorphenamine antihistamine tablets26K searches a year

02 · Price

A sale here is worth £7.30.

Listings sell for £7.30 on average, from £1.97 to £16.99. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 100 to 250 of them. At £7.30 that is £730 to £2K a year per listing.

Average price
£7.30under the $15 to $100 sweet spot
Price range
£1.97–£16.99
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
5K–6K
Units per listing a year
100–250
Revenue per listing a year
£730–£2K
Returns
0.0%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is reviews.

61% of listings pay for placement with sponsored ads. 74% ship with Prime. On an average day, 8.6% of listings are out of stock. The average listing ranks #50 within Allergy & Asthma Relief. It carries 2,329 reviews at 4.68 stars, so a new listing needs social proof before a better product.

Sponsored listings
61%
Prime listings
74%
Out of stock, average day
8.6%
Average rank
#50in Allergy & Asthma Relief
Average rating
4.68 starsAmazon United Kingdom average 4.36 stars
Average reviews
2,329per listing
Listings tracked
23

04 · Newcomers

4 of last year's 5 launches cleared the first-year sales bar.

5 products launched here in the last 12 months. 4 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 49 months on average, so the names here are settling in.

Launched, last 12 months
5
Successful launches
4Amazon's first-year sales bar
Average brand age
49 months

Products

Top Phenergan products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 24, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 54% of clicks. Leaders hold, but buyers still shop past them.

£0£1K£2K£3K£4K1101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

Brands

16 rising

Sellers

118

Est. top-5 brand share

71%

Top 20: 100%

Est. top-5 click share

54%

Top 20: 96%

Open market

25%

  • Generic32%
  • Benadryl17%
  • Amazon Basic Care8%
  • Vividrin7%
  • Galpharm6%
  • Sentanase4%

Demand

Phenergan search demand

Weekly searches over the year, seasonality beneath. Pick a range.

8K6KSpike '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Sep, Oct · busiest ÷ quietest = 2.7×

Search terms

Top Phenergan search terms shoppers use

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

  • chlorphenamine antihistamine tablets26K/yr
  • chlorphenamine37K/yr
  • chlorphenamine maleate15K/yr
  • chlorphenamine maleate 4mg22K/yr
  • chlorphenamine tablets4K/yr
  • chlorphenamine 4mg5K/yr
  • piriton chlorphenamine maleate3K/yr
  • chlorpheniramine3K/yr

Reviews and returns

What reviews say buyers love and hate about Phenergan

We read the reviews and the return reasons for every product selling here.

24%of positive reviews mention “Value For Money”
18%of negative reviews mention “Functionality-Overall”
<0.1%of orders come back, a rate Amazon rounds to zero
“Didn't work”
A buyer, on “Functionality-Overall”18% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

15 topics

NegativePositive

FAQ

Common Phenergan questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data