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magnesium 400

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Soft demand (-15.8% this quarter) — this niche doesn't clear our bar today.

Market size 19Growth 17Conversion 84Competition 48Returns 100Price range 73Avg price 63Brand share 42Review moat 55Quality gap 35

Returns

Incredible0.0%

return rate — above 6% kills the launch gate

Conversion

Great9.3%

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

Price range

Good€2.33–€49.82

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

Avg price

Good€13.53

avg listing price — sweet spot $15–$100

Review moat

Good1,298.61

avg incumbent reviews — the moat a new listing must climb

Competition

Okay56%

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

Brand share

Okay80%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Market size

Bad€76K

€76K/yr · 60K searches

Growth

Bad-15.8%

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

Competition

The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 falling

Sellers

37

Top-5 brand share

80%

Open market

17%

  • Doppelherz51%
  • Vegavero17%
  • SUNDAY NATURAL4%
  • Vitamintrend4%
  • +LIFE4%
  • natural elements3%
  • Open — no brand owns it (8 brands, 17%)

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%€4K10%€8K15%€11K20%€15K1101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 23 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -15.8% search growth over the last 90 days.
2K1KBlack Friday '24Prime Day '25Spike '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Reviews

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

What buyers love

Magnesium25%

“Bestes Magnesium ever”

Qualität insgesamt24%

“Super Produkt”

Preis-Leistungs-Verhältnis6%

“Top Preis/Leistung”

Schlafqualität5%

“und bin überrascht dass ich nun wieder besser Schlafen kann ohne Melatonin einnehmen zu müssen.”

beworben Vs Tatsächliches Produkt5%

“Produkt wie vom Verkäufer beschrieben”

Linderung von Muskelschmerzen4%

“Muskelentspannung”

Vitamin2%

“Bin sehr zufrieden, super Supplements”

Effizienz2%

“Wirkt”

Einfaches Kauen/Schlucken2%

“Gut zum schlucken”

Gesamtgröße2%

“Passt”

What buyers complain about

Magnesium18%

“Magnesium halt”

Dosierung6%

“Scheinbar hoher Anteil an (billigem) MG Oxid.”

Säureregulator/Linderung von Magenschmerzen5%

“Durchfall”

Gesamtgröße4%

“Sind riesig”

Funktionalität insgesamt4%

“Wirkung fraglich”

Einfaches Kauen/Schlucken4%

“Nicht gut zum schlucken”

Nebenwirkungen4%

“Nebenwirkungen”

Benutzerfreundlichkeit3%

“Unbrauchbar”

Reguliert die Verdauung3%

“Ich hab davon Übelkeit bekommen, Bauchschmerzen, Bauchkrämpfe, mir ging’s richtig schlecht.”

Preis-Leistungs-Verhältnis3%

“Expensive”

Top return reasons

Magnesium100%