diphenhydramine 50mg 1000 capsules
Skip itA small market ($9K/yr) — this niche doesn't clear our bar today.
Conversion
Incredible20.7%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.0%return rate — above 6% kills the launch gate
Avg price
Great$17.47avg listing price — sweet spot $15–$100
Price range
Great$10.07–$29.46cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay79%top-5 brand share — brands hold most of the demand
Review moat
Bad5,616.33avg incumbent reviews — the moat a new listing must climb
Growth
Bad-7.7%90-day search growth — must beat 0% to launch
Competition
Bad79%top-5 click share — a locked-up shelf
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Market size
Bad$9K$9K/yr · 2K searches
Competition
The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 rising
Sellers
14
Top-5 brand share
79%
Open market
15%
- WELMATE26%
- SDA LABORATORIES21%
- Wonder Laboratories13%
- P Puregen Labs11%
- HEALTH LFE8%
- GenCare6%
- Open — no brand owns it (3 brands, 15%)
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 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
WELMATE Allergy Relief - Diphenhydramine 50 mg - 1000 Count Capsules - Antihistamine - Allergy & Cold Symptoms - Sneezing Runny Nose Itchy Eyes & Throat
WELMATE$24.634.7★677 rev
SDA LABORATORIES Diphenhydramine 50mg Allergy Relief Fast-Acting Indoor & Outdoor Antihistamine Symptom Control 1000 Count (1 Bottle)
SDA LABORATORIES$29.464.8★944 rev
Wonder Laboratories Pharbedryl Diphenhydramine HCI 50 Mg Allergy Medicine and Antihistamine y - 1000 Capsules #3639
Wonder Laboratories$22.674.8★45 rev
Puregen Labs Diphenhydramine HCl 50 mg Capsules 1000 Count Antihistamine I Allergy & Cold Symptoms Relief - Sneezing Runny Nose Itchy Eyes & Throat
P Puregen Labs$24.765.0★5 rev
HEALTH LFE Allergy Relief Medicine Diphenhydramine HCl Caplets 25 mg | Children and Adults | Relieves Sneezing Runny Nose Hay Fever Symptoms Itchy Eyes and Throat (Large 1000 Count)
HEALTH LFE$10.124.8★2,715 rev
Newest
by launch datePuregen Labs Diphenhydramine HCl 50 mg Capsules 1000 Count Antihistamine I Allergy & Cold Symptoms Relief - Sneezing Runny Nose Itchy Eyes & Throat
P Puregen Labs$24.765 rev
WELMATE Allergy Relief - Diphenhydramine 50 mg - 1000 Count Capsules - Antihistamine - Allergy & Cold Symptoms - Sneezing Runny Nose Itchy Eyes & Throat
WELMATE$24.63677 rev
RIGHT REMEDIES Nighttime Sleep Aid Softgels (275 softgels) Diphenhydramine HCI 50 mg Fall Asleep Fast Supports Deeper Restful Sleep
RIGHT REMEDIES$11.091,292 rev
MedPlus Allergy Relief Medicine Diphenhydramine HCl 25 mg 1000 Tablets Antihistamine Relief for Indoor & Outdoor Allergies Made in USA
Generic$10.331,330 rev
HEALTH LFE Allergy Relief Medicine Diphenhydramine HCl Caplets 25 mg | Children and Adults | Relieves Sneezing Runny Nose Hay Fever Symptoms Itchy Eyes and Throat (Large 1000 Count)
HEALTH LFE$10.122,715 rev
Trending
90-day click momentumPuregen Labs Diphenhydramine HCl 50 mg Capsules 1000 Count Antihistamine I Allergy & Cold Symptoms Relief - Sneezing Runny Nose Itchy Eyes & Throat
P Puregen Labs$24.765.0★
RIGHT REMEDIES Nighttime Sleep Aid Softgels (275 softgels) Diphenhydramine HCI 50 mg Fall Asleep Fast Supports Deeper Restful Sleep
RIGHT REMEDIES$11.094.4★
SDA LABORATORIES Diphenhydramine 50mg Allergy Relief Fast-Acting Indoor & Outdoor Antihistamine Symptom Control 1000 Count (1 Bottle)
SDA LABORATORIES$29.464.8★
GenCare Allergy Relief Medicine Bulk Value 1000 Count Diphenhydramine 25mg Antihistamines for Adults for Congestion Sneezing Runny Nose Itchy Eyes & Throat Pink
GenCare$14.054.8★
MedPlus Allergy Relief Medicine Diphenhydramine HCl 25 mg 1000 Tablets Antihistamine Relief for Indoor & Outdoor Allergies Made in USA
Generic$10.334.8★
Demand & seasonality
Weekly Amazon search volume, last 103 weeks — -7.7% search growth over the last 90 days.Peak months: May · busiest ÷ quietest = 3.2×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Great night sleep”
“Fair price”
“the tablets have been consistent in quality”
“Works just as intended”
“Just as advertised”
“Use it daily”
“These are perfect for allergies”
“I swallowed them fine”
“have no side effects”
“Works well easy to take works within 30 minutes”
What buyers complain about
“Now I won't sleep at all”
“Didn't work for me”
“These pills do not work at all”
“Weird reaction”
“for some reason they are soft and mushy instead of hard like usual and they have a medicine taste to them makes me wonder if some of them broke open and got wet and that's why they're so soft and taste the way they do”
“Very inconsistent, not sure about the quality control”
“Cap is loose fitting”
“Ineffective, just waste of money”
“The pills have a chemical smell and chemical taste”
“Just be aware of these are capsules, not tablets”