Is magnesium 400 profitable to sell on Amazon Germany?

The niche generates €76K/yr across 23 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -15.8%. Flapen's verdict: Skip it (48/100).

How competitive is the magnesium 400 niche?

14 brands and 37 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 80% of demand.

What do buyers complain about in magnesium 400?

Top complaints mined from reviews: Magnesium, Dosierung, Säureregulator/Linderung von Magenschmerzen. The return rate is 0.0%.

When does demand for magnesium 400 peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the magnesium 400 niche?

Listings span €2.33–€49.82; the average listing price is €13.53 (sweet spot $15–$100). The average incumbent carries 1,299 reviews — the moat a new listing must climb.

magnesium 400

Skip it

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

Returns

Incredible0.0%

return rate — above 5% 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

According to Flapen's Amazon Germany niche tracking, magnesium 400 is a €76K/yr Amazon Germany market (60K searches/yr). The top 5 brands hold 80% of demand. Verdict: Skip it — 48/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

magnesium 400 market data

Units sold / yr: 6K–8K; avg 250–500/product
Revenue / yr: €81K–€108K; units × avg price
Conversion rate: 9.3%
Avg BSR: #198
Page quality: 0%
Prime: 100%
Sponsored: 87%
Out of stock: 0.0%
Avg brand age: 64 months
Avg seller age: 184 days

Competition & brand share

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

Brands

14 falling

Sellers

Top-5 brand share

80%

Top 20: 100%

Top-5 click share

56%

Top 20: 97%

Open market

17%

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

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -15.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top magnesium 400 search terms

magnesium kalium33K/yr -13.2%9.6% conv.
kalium magnesium15K/yr -36.0%6.6% conv.
magnesium und kalium6K/yr -5.4%9.2% conv.
magnesium mit kalium3K/yr +50.6%6.9% conv.
doppelherz magnesium kalium3K/yr -2.4%13.1% conv.

All search terms

Top magnesium 400 products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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

Top sellers

by 90-day click share

Vegavero€17.064.4★2,203 rev

Doppelherz Magnesium + Kalium - 400 mg Magnesium und 400 mg Kalium pro Tagesportion in einer Tablette - vegan - 60 Tabletten

Doppelherz€7.104.6★1,005 rev

Doppelherz Magnesium + Kalium 400 Magnesium und Kalium als Beitrag für die normale Muskelfunktion 30 Tabletten

Doppelherz€3.014.6★1,005 rev

Doppelherz Magnesium + Calcium + Kalium - hochdosiertes Magnesium als Beitrag für die normale Muskelfunktion und das Elektrolytgleichgewicht - 100 Tabletten

Doppelherz€11.884.6★1,133 rev

SUNDAY NATURAL Magnesium Komplex 240 Kapseln - 400mg pro Tag - aus 7 Verbindungen: Magnesium Bisglycinat Citrat Malat Laktat Ascorbat Oxid Lysinat - Vegan laborgeprüft

SUNDAY NATURAL€16.034.6★1,754 rev

Newest

by launch date

Doppelherz Magnesium + Calcium + Kalium + D3 DIRECT - 400 mg Magnesium 150 mg Calcium und 300 mg Kalium pro Tagesportion - 20 Portionen

Doppelherz€4.5612 rev

3mo ago

SUNDAY NATURAL Magnesium Komplex 240 Kapseln - 400mg pro Tag - aus 7 Verbindungen: Magnesium Bisglycinat Citrat Malat Laktat Ascorbat Oxid Lysinat - Vegan laborgeprüft

SUNDAY NATURAL€16.031,754 rev

8mo ago

Magnesium Kalium Komplex mit Calcium Zink | 6 Monate Vorrat - 180 Vegane Tabletten | Hochdosiert | Basenpulver Tabletten | von Horbaach

Horbäach€9.41231 rev

1y ago

Raab Vitalfood Kalium mit Magnesium Pulver (200 g) - für Nerven Muskelfunktion und Kalium für Blutdruck ideale Zusammensetzung ohne Zusätze

Raab Vitalfood€18.477 rev

1y ago

Vitamintrend Kalium-Magnesiumcitrat mit 900mg Kalium und 240mg Magnesium 120 Kapseln hochdosiert veganes Nahrungsergänzungsmittel ohne Zusätze in Deutschland hergestellt

Vitamintrend€13.1274 rev

2y ago

What buyers say about magnesium 400

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%

Common questions

Is magnesium 400 profitable to sell on Amazon Germany?: The niche generates €76K/yr across 23 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -15.8%. Flapen's verdict: Skip it (48/100).
How competitive is the magnesium 400 niche?: 14 brands and 37 sellers compete. The top 5 products take 56% of clicks and top 5 brands hold 80% of demand.
What do buyers complain about in magnesium 400?: Top complaints mined from reviews: Magnesium, Dosierung, Säureregulator/Linderung von Magenschmerzen. The return rate is 0.0%.
When does demand for magnesium 400 peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the magnesium 400 niche?: Listings span €2.33–€49.82; the average listing price is €13.53 (sweet spot $15–$100). The average incumbent carries 1,299 reviews — the moat a new listing must climb.