diphenhydramine liquid
Skip itA concentrated shelf (top 5 take 83% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 6% kills the launch gate
Conversion
Great9.6%search→purchase rate — share of searches ending in a sale
Avg price
Okay$9.97avg listing price — sweet spot $15–$100
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Okay3,574.5avg incumbent reviews — the moat a new listing must climb
Price range
Okay$4.26–$19.13cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Bad-1.8%90-day search growth — must beat 0% to launch
Market size
Bad$72K$72K/yr · 75K searches
Brand share
Bad94%top-5 brand share — brand-locked demand
Competition
Bad83%top-5 click share — a locked-up shelf
Competition
The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 falling
Sellers
66
Top-5 brand share
94%
Open market
3%
- Amazon Basic Care61%
- ZzzQuil15%
- GeriCare8%
- P Puregen Labs6%
- APSAFE3%
- Benadryl3%
- Open — no brand owns it (1 brand, 3%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Amazon Basic Care Nighttime Sleep-Aid Liquid for Adults Helps Fall Asleep Fast Diphenhydramine HCl 50 mg Mixed Berry Flavor 12 fl oz (Pack of 1)
Amazon Basic Care$5.644.5★7,621 rev
Amazon Basic Care Childrens Allergy Relief Oral Solution Diphenhydramine HCl Antihistamine Cherry Flavor 4 fl oz (Pack of 1)
Amazon Basic Care$4.264.8★1,966 rev
GeriCare Geri-Dryl Diphenhydramine HCI Solution - Antihistamine Liquid Multi-Symptom Allergy Relief Formula - Relieves Sneezing Runny Nose Watery Itchy Eyes & Throat 16 FL OZ (Pack of 1) Red
GeriCare$9.904.5★184 rev
ZzzQuil Sleep Aid Nighttime Sleep Aid Liquid 50 mg Diphenhydramine HCl Fall Asleep Fast Non-Habit Forming Warming Berry Flavor 12 FL OZ (Pack of 2)
ZzzQuil$15.404.7★9,828 rev
Puregen Labs Allergy Relief Oral Solution Diphenhydramine HCl 12.5mg/5 mL Antihistamine Cherry Flavor 16 Ounces
P Puregen Labs$11.994.5★445 rev
Newest
by launch date
ZzzQuil Liquid Sleep Aid Diphenhydramine 50mg HCI Free & Clear Free of Alcohol and Artificial Dyes Nighttime Sleep Aid Liquid Non-Habit Forming Strawberry Flavored 2 Pack 24 FL OZ
Vicks$19.13290 rev
Benadryl Allergy Medicine Liquid Diphenhydramine HCl Antihistamines for Adults Alcohol-Free Hay Fever Allergy Relief for Sneezing Runny Nose Itchy & Watery Eyes Wild Cherry 4 fl oz
Benadryl$8.131,282 rev
GeriCare Geri-Dryl Diphenhydramine HCI Solution - Antihistamine Liquid Multi-Symptom Allergy Relief Formula - Relieves Sneezing Runny Nose Watery Itchy Eyes & Throat 16 FL OZ (Pack of 1) Red
GeriCare$9.90184 rev
Nighttime Sleep-Aid Liquid for Adults AP Safe
APSAFE$6.8679 rev
Puregen Labs Allergy Relief Oral Solution Diphenhydramine HCl 12.5mg/5 mL Antihistamine Cherry Flavor 16 Ounces
P Puregen Labs$11.99445 rev
Trending
90-day click momentumZzzQuil Liquid Sleep Aid Diphenhydramine 50mg HCI Free & Clear Free of Alcohol and Artificial Dyes Nighttime Sleep Aid Liquid Non-Habit Forming Strawberry Flavored 2 Pack 24 FL OZ
Vicks$19.134.4★
ZzzQuil Liquid Sleep Aid Diphenhydramine 50mg HCl Nighttime Sleep Aid Liquid Sleep Aids for Adults Warming Berry Flavored 12 FL OZ
ZzzQuil$9.164.6★
Puregen Labs Allergy Relief Oral Solution Diphenhydramine HCl 12.5mg/5 mL Antihistamine Cherry Flavor 16 Ounces
P Puregen Labs$11.994.5★
Nighttime Sleep-Aid Liquid for Adults AP Safe
APSAFE$6.864.3★
Benadryl Allergy Medicine Liquid Diphenhydramine HCl Antihistamines for Adults Alcohol-Free Hay Fever Allergy Relief for Sneezing Runny Nose Itchy & Watery Eyes Wild Cherry 4 fl oz
Benadryl$8.134.8★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -1.8% search growth over the last 90 days.Peak months: Mar, Apr, May, Jun · busiest ÷ quietest = 21.9×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Sleep Like A Baby”
“Very effective for me”
“Great and affordable”
“Just as good as name brand”
“doesnt leave a weird aftertaste”
“Works as advertised”
“Good flavor”
“Perfect dose for my Wife since the regular strength is too strong for her”
“It is effective for treating allergy symptoms”
“Its easy to use”
What buyers complain about
“No sleep”
“Taste like crap”
“Didn't work for me”
“It could be that I require a larger dose”
“Flavor is terrible”
“Waste of money”
“suddenly developed allergies”
“Have you ever noticed how many different cough/cold/sleep aids have tons of stuff you dont need”
“Some side effects for me”
“Total garbage”