---
title: "Products — diphenhydramine - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/diphenhydramine/products"
last_updated: "2026-08-11T11:26:14.546Z"
locale: en
meta:
  description: "Niche score 43/100 · $532K/yr market · 533K searches/yr · $8.24 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:description": "Niche score 43/100 · $532K/yr market · 533K searches/yr · $8.24 avg price. Doesn't clear our bar today. Data updated Jul 2026."
  "og:title": "Products — diphenhydramine - Flapen"
---

# **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 5% 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

## Products