Diphenhydramine
FailThe top 5 products take 100% of clicks, so Diphenhydramine is a Fail.
- Flapen Score
- 36 / 100Ranks 1,876 of 2,035 Health & Personal Care niches · −12 vs the category median of 4836
- Market size
- £200K/yr244K searches / yr
- 90-day growth
- +16.8%search demand this quarter
- Competition
- 100%top-5 click share · 2 brands · 82 sellers
Flapen Score
Diphenhydramine against its category
The dotted line is the Health & Personal Care average. Past it, Diphenhydramine is stronger. Inside it, weaker.
Market
The Diphenhydramine market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Diphenhydramine 244K times last year and spent an estimated £200K. All 2 brands take every click. Flapen scores it 36 out of 100, a Fail.
01 · Demand
16.1% of searches ended in a purchase last week.
Shoppers searched for this 244K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 16.1% of those searches ended in a purchase. Searches in the last 90 days moved +16.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated £200K a year.
- Searches, last 12 months
- 244K
- Growth, 90 days vs prior 90
- +16.8%
- Conversion, latest week
- 16.1%
- Market size, estimated
- £200Ka year
- Top search term
- benadryl97K searches a year
02 · Price
A sale here is worth £5.09.
Listings sell for £5.09 on average, from £3.89 to £6.76. Amazon reports units sold in ranges. This niche sold 30K to 40K a year. The average listing sells 6,000 to 8,000 of them. At £5.09 that is £31K to £41K a year per listing.
- Average price
- £5.09under the $15 to $100 sweet spot
- Price range
- £3.89–£6.76
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 30K–40K
- Units per listing a year
- 6,000–8,000
- Revenue per listing a year
- £31K–£41K
- Returns
- 0.0%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is reviews.
80% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #13 within Allergy & Asthma Relief. It carries 4,080 reviews at 4.68 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 80%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #13in Allergy & Asthma Relief
- Average rating
- 4.68 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 4,080per listing
- Listings tracked
- 5
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 52 months on average, so the names here are settling in.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 52 months
Products
Top Diphenhydramine products & what they sell for
Every tracked product: its share of the shelf, its reviews, and its price.
Top sellers
by 90-day click share
Benadryl Allergy Relief Capsules (1 x 24) Antihistamine Capsules with Acrivastine Hayfever Tablets for Relief Suitable for Pet Dust and Skin Allergies
- Price
- £5.50
- Rating
- 4.6/5
- Reviews
- 5,012
- Age
- 8y ago

Benadryl Allergy One A Day 10 Mg Tablets - Effective and Long-Lasting Relief - 30 Count
- Price
- £6.76
- Rating
- 4.6/5
- Reviews
- 8,541
- Age
- 10y ago

Benadryl Allergy Relief Capsules (1 x 12 Capsules) Antihistamine Tablets with Acrivastine
- Price
- £3.89
- Rating
- 4.7/5
- Reviews
- 2,778
- Age
- 17y ago

Benadryl Allergy Relief for Children 6+ Years (1 x 60ml) Tutti Frutti Flavour Syrup Sugar & Colour Free with Cetirizine Long-Lasting All-Day Relief
- Price
- £4.43
- Rating
- 4.7/5
- Reviews
- 390
- Age
- 1y ago

240 x 10mg Cetirizine Dihydrochloride (8 Months Supply) One a Day hay Fever and Allergy Relief Tablets (8x30 Tablets)
- Price
- £4.85
- Rating
- 4.8/5
- Reviews
- 3,681
- Age
- 4y ago
Trending
90-day click momentum
Benadryl Allergy Relief for Children 6+ Years (1 x 60ml) Tutti Frutti Flavour Syrup Sugar & Colour Free with Cetirizine Long-Lasting All-Day Relief
- Price
- £4.43
- Rating
- 4.7/5
- Reviews
- 390
- Age
- 1y ago

Benadryl Allergy One A Day 10 Mg Tablets - Effective and Long-Lasting Relief - 30 Count
- Price
- £6.76
- Rating
- 4.6/5
- Reviews
- 8,541
- Age
- 10y ago

Benadryl Allergy Relief Capsules (1 x 12 Capsules) Antihistamine Tablets with Acrivastine
- Price
- £3.89
- Rating
- 4.7/5
- Reviews
- 2,778
- Age
- 17y ago

Benadryl Allergy Relief Capsules (1 x 24) Antihistamine Capsules with Acrivastine Hayfever Tablets for Relief Suitable for Pet Dust and Skin Allergies
- Price
- £5.50
- Rating
- 4.6/5
- Reviews
- 5,012
- Age
- 8y ago

240 x 10mg Cetirizine Dihydrochloride (8 Months Supply) One a Day hay Fever and Allergy Relief Tablets (8x30 Tablets)
- Price
- £4.85
- Rating
- 4.8/5
- Reviews
- 3,681
- Age
- 4y ago
Newest
by launch date
Benadryl Allergy Relief for Children 6+ Years (1 x 60ml) Tutti Frutti Flavour Syrup Sugar & Colour Free with Cetirizine Long-Lasting All-Day Relief
- Price
- £4.43
- Rating
- 4.7/5
- Reviews
- 390
- Age
- 1y ago

240 x 10mg Cetirizine Dihydrochloride (8 Months Supply) One a Day hay Fever and Allergy Relief Tablets (8x30 Tablets)
- Price
- £4.85
- Rating
- 4.8/5
- Reviews
- 3,681
- Age
- 4y ago

Benadryl Allergy Relief Capsules (1 x 24) Antihistamine Capsules with Acrivastine Hayfever Tablets for Relief Suitable for Pet Dust and Skin Allergies
- Price
- £5.50
- Rating
- 4.6/5
- Reviews
- 5,012
- Age
- 8y ago

Benadryl Allergy One A Day 10 Mg Tablets - Effective and Long-Lasting Relief - 30 Count
- Price
- £6.76
- Rating
- 4.6/5
- Reviews
- 8,541
- Age
- 10y ago

Benadryl Allergy Relief Capsules (1 x 12 Capsules) Antihistamine Tablets with Acrivastine
- Price
- £3.89
- Rating
- 4.7/5
- Reviews
- 2,778
- Age
- 17y ago
Competition
Competition: brands, sellers & click share
The top 5 products take 100% of clicks. A locked shelf that new listings rarely crack.
Brands
2 falling
Sellers
82
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- Benadryl96%
- Crescent Pharma Limited4%
Demand
Diphenhydramine search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jun · busiest ÷ quietest = 1.9× · 8 of 12 months tracked
Search terms
Top Diphenhydramine search terms shoppers use
The exact words shoppers type, with yearly volume, growth, and conversion.
- benadryl97K/yr
- benadryl allergy relief51K/yr
- diphenhydramine38K/yr
- benadryl one a day 30 tablets11K/yr
- diphenhydramine hydrochloride13K/yr
- acrivastine8K/yr
- benadryl for dogs17K/yr
- benedryl3K/yr
- diphenhydramine antihistamine2K/yr
- diphenhydramine tablets3K/yr
Reviews and returns
What reviews say buyers love and hate about Diphenhydramine
What buyers praise, what they complain about and why they send it back, from the reviews.
Complain
Obviously they're the most expensive tablets
A rip off price
Rip Off Price
doesn't contain many doses
not many doses
Only 12 tablets in the box not 24
It doesn't state age limit on box
I find these make me drowsy
Didnt work for me
Love
Good value
Amazing value
Great deal
Allergy relief
Great for dogs with allergies
Great for food allergies
The best hay fever relief
hay fever
Great product helps with my hayfever
Very effective
Works well
I found them to be very effective
Does what it says on the package
Product as described
They Actually work
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Diphenhydramine questions
Answered from the same tracked data.









