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47

diphenhydramin

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A small market ($34K/yr) — this niche doesn't clear our bar today.

Market size 8Growth 17Conversion 85Competition 32Returns 100Price range 37Avg price 35Brand share 38Review moat 71Quality gap 88

Returns

Incredible0.0%

return rate — above 6% kills the launch gate

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Conversion

Great9.4%

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

Review moat

Good659.13

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay82%

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

Price range

Okay€5.07–€20.92

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

Avg price

Okay€10.14

avg listing price — sweet spot $15–$100

Competition

Okay66%

top-5 click share — leaders hold, buyers still browse

Growth

Bad-16.9%

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

Market size

Bad€34K

€34K/yr · 35K searches

Competition

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 rising

Sellers

24

Top-5 brand share

82%

Open market

13%

  • Aristo38%
  • apo-discounter.de14%
  • Bodfeld Apotheke12%
  • Berco-ARZNEIMITTEL11%
  • STADA7%
  • AL Aliud Pharma5%
  • Open — no brand owns it (5 brands, 13%)

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%€3K20%€7K30%€10K40%€14K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 16 tracked products in this niche — three views at once, no toggling.

Demand

Weekly Amazon search volume, last 40 weeks — -16.9% search growth over the last 90 days.
1K750Spike '26Oct '25Nov '25Dec '25Feb '26Mar '26May '26Jun '26

Reviews

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

What buyers complain about

Schlafqualität100%

“Ich könnte damit nicht schlafen”

Top return reasons

Schlafqualität20%
Funktionalität insgesamt20%
Inhaltsstoffe – insgesamt20%
Alterseignung20%
Komfort insgesamt10%
Gesamtgröße10%