---
title: "diphenhydramine — Niche Verdict: Skip it (43/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/health-household/diphenhydramine"
last_updated: "2026-07-14T02:17:44.547Z"
locale: en
meta:
  description: "prices mostly outside the sweet spot ($4.12–$10.33) — diphenhydramine doesn't clear our bar today."
  "og:description": "prices mostly outside the sweet spot ($4.12–$10.33) — diphenhydramine doesn't clear our bar today."
  "og:title": "diphenhydramine — Niche Verdict: Skip it (43/100) | Amazon United States - Flapen"
---

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# **diphenhydramine**

**Skip it**

Prices mostly outside the sweet spot ($4.12–$10.33) — this niche doesn't clear our bar today.

Market size 61Growth 25Conversion 95Competition 24Returns 100Price range 0Avg price 23Brand share 35Review moat 19Quality gap 17

**Returns**

**Incredible****0.0%**

return rate — above 6% kills the launch gate

**Conversion**

**Incredible****12.1%**

search→purchase rate — share of searches ending in a sale

**Market size**

**Good****$532K**

$532K/yr · 533K searches

**Brand share**

**Okay****84%**

top-5 brand share — brands hold most of the demand

**Growth**

**Okay****+0.3%**

90-day search growth — must beat 0% to launch

**Competition**

**Bad****71%**

top-5 click share — a locked-up shelf

**Avg price**

**Bad****$8.24**

avg listing price — sweet spot $15–$100

**Review moat**

**Bad****15,029.8**

avg incumbent reviews — the moat a new listing must climb

**Quality gap**

**Bad****4.7★**

avg incumbent rating — lower means beatable quality

**Price range**

**Bad****$4.12–$10.33**

cheapest to priciest tracked listing — scored on the share inside $15–$100

## **Competition**

The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.

**Brands**

**11 **▲rising

**Sellers**

**60**

**Top-5 brand share**

**84%**

**Open market**

**11%**

- Amazon Basic Care51% - HEALTH LFE11% - HealthA2Z10% - Generic7% - TIME-CAP LABS, INC.5% - ValuMeds4% - Open — no brand owns it (5 brands, 11%)

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%$53K20%$106K30%$160K40%$213K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Amazon Basic Care Allergy Relief Diphenhydramine HCl 25 mg Antihistamine Tablets for Symptoms Due to Hay Fever and Upper Respiratory Allergies Mini-Tabs 100 Count](https://m.media-amazon.com/images/I/41K26vaxnOL.jpg)**Amazon Basic Care Allergy Relief Diphenhydramine HCl 25 mg Antihistamine Tablets for Symptoms Due to Hay Fever and Upper Respiratory Allergies Mini-Tabs 100 Count**Amazon Basic Care**$4.12**4.8★54,786 rev](https://www.amazon.com/dp/B07HD8SFNT) [2![Amazon Basic Care Complete Allergy Relief Diphenhydramine HCl 25 mg Easy to Swallow Mini-Tabs Relieves Sneezing Itchy Eyes Runny Nose Itchy Throat 400 Count](https://m.media-amazon.com/images/I/412oY-CSVJL.jpg)**Amazon Basic Care Complete Allergy Relief Diphenhydramine HCl 25 mg Easy to Swallow Mini-Tabs Relieves Sneezing Itchy Eyes Runny Nose Itchy Throat 400 Count**Amazon Basic Care**$8.12**4.8★54,786 rev](https://www.amazon.com/dp/B074F19XB8) [3![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)](https://m.media-amazon.com/images/I/41xGg016pNL.jpg)**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**$10.12**4.8★2,715 rev](https://www.amazon.com/dp/B0977CZ4Q3) [4![MedPlus Allergy Relief Medicine Diphenhydramine HCl 25 mg 1000 Tablets Antihistamine Relief for Indoor & Outdoor Allergies Made in USA](https://m.media-amazon.com/images/I/31t1vtwqBXL.jpg)**MedPlus Allergy Relief Medicine Diphenhydramine HCl 25 mg 1000 Tablets Antihistamine Relief for Indoor & Outdoor Allergies Made in USA**Generic**$10.33**4.8★1,330 rev](https://www.amazon.com/dp/B0B86KXZR3) [5![TIME-Cap Labs 650 Caplets Diphenhydramine HCl 25mg Allergy Relief Antihistamine for Adults Helps Relieve Sneezing Runny Nose Itchy Watery Eyes & Itchy Throat](https://m.media-amazon.com/images/I/51nulg0jixL.jpg)**TIME-Cap Labs 650 Caplets Diphenhydramine HCl 25mg Allergy Relief Antihistamine for Adults Helps Relieve Sneezing Runny Nose Itchy Watery Eyes & Itchy Throat**TIME-CAP LABS, INC.**$8.77**4.8★5,236 rev](https://www.amazon.com/dp/B09QX4MB78)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Berkley Jensen Allergy Relief Tablets 25mg Diphenhydramine HCI 600 Count](https://m.media-amazon.com/images/I/51R-tLYncKL.jpg)**Berkley Jensen Allergy Relief Tablets 25mg Diphenhydramine HCI 600 Count**berkley jensen**$8.00**189 rev5mo ago](https://www.amazon.com/dp/B0GL6ZQSDV) [![GoodMeds Allergy Medicine Antihistamine Diphenhydramine HCl 25 mg | Children and Adults | Relieve Itchy Eyes Runny Nose Sneezing (25 mg 600 Tablets)](https://m.media-amazon.com/images/I/41vIbxJpwOL.jpg)**GoodMeds Allergy Medicine Antihistamine Diphenhydramine HCl 25 mg | Children and Adults | Relieve Itchy Eyes Runny Nose Sneezing (25 mg 600 Tablets)**GoodMeds**$9.60**534 rev6mo ago](https://www.amazon.com/dp/B0GF3BCLGY) [![HEALTH LFE HealthLife Sleep Aid (Diphenhydramine HCl Caplets 25 mg Blue) 300 Count](https://m.media-amazon.com/images/I/41iuhO5STCL.jpg)**HEALTH LFE HealthLife Sleep Aid (Diphenhydramine HCl Caplets 25 mg Blue) 300 Count**HEALTH LFE**$7.03**483 rev3y ago](https://www.amazon.com/dp/B0C3JJJF9N) [![MedPlus Allergy Relief Medicine Diphenhydramine HCl 25 mg 1000 Tablets Antihistamine Relief for Indoor & Outdoor Allergies Made in USA](https://m.media-amazon.com/images/I/31t1vtwqBXL.jpg)**MedPlus Allergy Relief Medicine Diphenhydramine HCl 25 mg 1000 Tablets Antihistamine Relief for Indoor & Outdoor Allergies Made in USA**Generic**$10.33**1,330 rev3y ago](https://www.amazon.com/dp/B0B86KXZR3) [![HealthA2Z Allergy Relief | Diphenhydramine HCL 25mg | Antihistamine | Relief from Itchy Throat Sneezing Runny Noses | Indoor & Outdoors Allergies (200 Caplets (Pack of 1))](https://m.media-amazon.com/images/I/41cwHnjquSL.jpg)**HealthA2Z Allergy Relief | Diphenhydramine HCL 25mg | Antihistamine | Relief from Itchy Throat Sneezing Runny Noses | Indoor & Outdoors Allergies (200 Caplets (Pack of 1))**HealthA2Z**$5.45**2,441 rev4y ago](https://www.amazon.com/dp/B09YJY6QSW)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Safrel Allergy Relief Medication 25mg Diphenhydramine HCl Antihistamine for Sneezing Runny Nose Itchy Eyes and Throat Indoor and Outdoor Allergies (1000 Count)](https://m.media-amazon.com/images/I/41idbCYQoML.jpg)**Safrel Allergy Relief Medication 25mg Diphenhydramine HCl Antihistamine for Sneezing Runny Nose Itchy Eyes and Throat Indoor and Outdoor Allergies (1000 Count)**Safrel**$10.11**4.7★**▲ 207%**](https://www.amazon.com/dp/B08TQ65Y2R) [![GoodMeds Allergy Medicine Antihistamine Diphenhydramine HCl 25 mg | Children and Adults | Relieve Itchy Eyes Runny Nose Sneezing (25 mg 600 Tablets)](https://m.media-amazon.com/images/I/41vIbxJpwOL.jpg)**GoodMeds Allergy Medicine Antihistamine Diphenhydramine HCl 25 mg | Children and Adults | Relieve Itchy Eyes Runny Nose Sneezing (25 mg 600 Tablets)**GoodMeds**$9.60**4.8★**▲ 171%**](https://www.amazon.com/dp/B0GF3BCLGY) [![Berkley Jensen Allergy Relief Tablets 25mg Diphenhydramine HCI 600 Count](https://m.media-amazon.com/images/I/51R-tLYncKL.jpg)**Berkley Jensen Allergy Relief Tablets 25mg Diphenhydramine HCI 600 Count**berkley jensen**$8.00**4.6★**▲ 94%**](https://www.amazon.com/dp/B0GL6ZQSDV) [![HEALTH LFE HealthLife Sleep Aid (Diphenhydramine HCl Caplets 25 mg Blue) 300 Count](https://m.media-amazon.com/images/I/41iuhO5STCL.jpg)**HEALTH LFE HealthLife Sleep Aid (Diphenhydramine HCl Caplets 25 mg Blue) 300 Count**HEALTH LFE**$7.03**4.6★**▲ 70%**](https://www.amazon.com/dp/B0C3JJJF9N) [![MedPlus Allergy Relief Medicine Diphenhydramine HCl 25 mg 1000 Tablets Antihistamine Relief for Indoor & Outdoor Allergies Made in USA](https://m.media-amazon.com/images/I/31t1vtwqBXL.jpg)**MedPlus Allergy Relief Medicine Diphenhydramine HCl 25 mg 1000 Tablets Antihistamine Relief for Indoor & Outdoor Allergies Made in USA**Generic**$10.33**4.8★**▲ 19%**](https://www.amazon.com/dp/B0B86KXZR3)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +0.3% search growth over the last 90 days.

10K6KSpike '25Prime Day '25 seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Value For Money**26%

*“much less expensive”*

**Sleep Quality**14%

*“Helps me sleep”*

**Allergies**13%

*“Good for allergies”*

**Quality-Overall**10%

*“the tablets have been consistent in quality”*

**Efficiency**9%

*“Does work”*

**Advertised Vs Actual Product**8%

*“As advertised”*

**Dosage**3%

*“Perfect dosage”*

**Ease Of Chewing/Swallowing**2%

*“I'm really glad I got what I ordered, because, although a little bigger, they're much easier to swallow and there's no horrible taste like the Tablets have”*

**Ease Of Use**1%

*“Easy to use”*

**Sinus Relief**1%

*“Helps with sinus and allergy issues”*

### **What buyers complain about **

**Sleep Quality**20%

*“Did not help me sleep”*

**Allergies**15%

*“having allergic reaction to something”*

**Functionality-Overall**12%

*“Doesnt work well”*

**Dosage**6%

*“This dosage is not easy to find locally”*

**Value For Money**4%

*“cheaper”*

**Strength**3%

*“Not as strong as needed”*

**Taste-Overall**2%

*“found them to have a strong chemical taste”*

**Side Effects**2%

*“It literally makes me nauseous”*

**Ingredients-Overall**2%

*“The bottle is a bit more barebones than Equate”*

**Size-Overall**2%

*“Very small”*