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52

vitamin d

Worth a look

Shows low returns (0.1%), but soft demand (-38.2% this quarter) keeps it on the watch list.

Market size 95Growth 6Conversion 88Competition 49Returns 100Price range 38Avg price 48Brand share 32Review moat 24Quality gap 23

Returns

Incredible0.1%

return rate — above 6% kills the launch gate

Market size

Incredible€2.3M

€2.3M/yr · 1.9M searches

Conversion

Great10.3%

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

Competition

Okay55%

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

Avg price

Okay€11.78

avg listing price — sweet spot $15–$100

Price range

Okay€2.98–€22.22

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

Brand share

Okay86%

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

Review moat

Bad5,925.5

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-38.2%

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

Competition

The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.

Brands

12 falling

Sellers

33

Top-5 brand share

86%

Open market

11%

  • natural elements43%
  • WeightWorld16%
  • ProFuel12%
  • SUNDAY NATURAL11%
  • Doppelherz4%
  • Sanhelios3%
  • Open — no brand owns it (6 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%5%€117K10%€234K15%€351K20%€468K1001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -38.2% search growth over the last 90 days.
70K50KPrime Day '24Spike '24Black Friday '24Prime Day '25Spike '25Black Friday '25SepDecMarJunAugNovMarMay

Peak months: Jan, Feb, Oct, Nov, Dec · busiest ÷ quietest = 2.6×

Reviews

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

What buyers love

Qualität insgesamt20%

“Bestes Produkt”

Vitamin16%

“Super Vitamine”

Preis-Leistungs-Verhältnis12%

“Super Preis/Leistung”

Dosierung9%

“Praktisch dosierbar und bekömmlich”

beworben Vs Tatsächliches Produkt6%

“Tut seinen Job”

Gesamtgröße5%

“Fühl mich fitter”

Einfaches Kauen/Schlucken5%

“sich super schlucken”

Benutzerfreundlichkeit4%

“Beste Handhabung schnell und einfach”

Ernährungs Gehalt2%

“Wichtiges Supplement”

Geschmack insgesamt2%

“Schmecken neutral”

What buyers complain about

Dosierung19%

“niedrig dosiert”

Vitamin10%

“Fraglich ohne vitamin k”

Gesamtgröße7%

“Die Tabletten sind so klein”

Funktionalität insgesamt5%

“Wirkt nicht”

Geschmack insgesamt3%

“Die Tropfen,sind geschmacksneutral”

Qualität insgesamt3%

“quality not good”

Nebenwirkungen2%

“unangenehme erfahrung”

beworben Vs Tatsächliches Produkt2%

“Irreführende IE-Angabe”

Säureregulator/Linderung von Magenschmerzen2%

“Haben in der 1 Woche der Einnahme Magenschmerzen verursacht”

Haltbarkeit2%

“fragwürdige Haltbarkeitsangabe”

Top return reasons

Sicherheitsstandards50%
Vitamin50%