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calcium magnesium zink

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Brand-locked demand (top 5 brands take 96% of clicks) — this niche doesn't clear our bar today.

Market size 31Growth 14Conversion 73Competition 56Returns 100Price range 52Avg price 79Brand share 9Review moat 23Quality gap 42

Returns

Incredible0.1%

return rate — above 6% kills the launch gate

Avg price

Great€16.71

avg listing price — sweet spot $15–$100

Conversion

Good6.8%

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

Competition

Good51%

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

Price range

Good€8.58–€22.05

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Market size

Okay€142K

€142K/yr · 125K searches

Review moat

Bad6,996.11

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-21.1%

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

Brand share

Bad96%

top-5 brand share — brand-locked demand

Competition

The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 rising

Sellers

9

Top-5 brand share

96%

Open market

2%

  • WeightWorld80%
  • natural elements8%
  • Nu U Nutrition4%
  • Nutravita2%
  • ProFuel2%
  • HealthyWorld1%
  • Open — no brand owns it (2 brands, 2%)

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%€14K20%€28K30%€43K40%€57K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 27 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 87 weeks — -21.1% search growth over the last 90 days.
4K3KHoliday '24Spike '25Prime Day '25Black Friday '25Spike '26DecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

No pronounced peak months · busiest ÷ quietest = 1.4×

Reviews

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

What buyers love

Qualität insgesamt22%

“Excellent product 👌🏻 Excellent product”

Magnesium14%

“Bestes Magnesium ever”

Preis-Leistungs-Verhältnis9%

“Super Preis/Leistung”

beworben Vs Tatsächliches Produkt5%

“Alles bestens,genau wie beschrieben”

Einfaches Kauen/Schlucken5%

“Tabletten sind gut einzunehmen”

Dosierung4%

“großzügig dosiert”

Vitamin4%

“Multivitaminne”

Schlafqualität4%

“Top schlaf”

Gesamtgröße2%

“Passt”

Benutzerfreundlichkeit2%

“Kein Problem mit Einnahme”

What buyers complain about

Dosierung8%

“Sehr niedrig dosiert”

Funktionalität insgesamt7%

“Wirkung Null”

Magnesium7%

“Magnesium halt”

Geruch7%

“Stinkt und wirkt nicht”

Gesamtgröße6%

“Sehr gross”

Nebenwirkungen5%

“und im Hals beim schlucken”

Säureregulator/Linderung von Magenschmerzen5%

“und Durchfall verursacht.”

Einfaches Kauen/Schlucken5%

“Schlucken unmöglich”

Qualität insgesamt3%

“Lieber hochwertigere Produkte wählen”

Geschmack insgesamt3%

“Fischiger Geschmack nach der Einnahme”