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diphenhydramine
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible16.1%search→purchase rate — share of searches ending in a sale
Growth
Okay+16.8%90-day search growth — must beat 0% to launch
Market size
Okay£200K£200K/yr · 244K searches
Review moat
Bad4,080.4avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Avg price
Bad£5.09avg listing price — sweet spot $15–$100
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Price range
Bad£3.89–£6.76cheapest to priciest tracked listing — scored on the share inside $15–$100