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53

arginin citrullin

Worth a look

Shows low returns (0.1%), but a concentrated shelf (top 5 take 78% of clicks) keeps it on the watch list.

Market size 51Growth 24Conversion 95Competition 19Returns 100Price range 89Avg price 91Brand share 29Review moat 25Quality gap 63

Returns

Incredible0.1%

return rate — above 6% kills the launch gate

Conversion

Incredible12.1%

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

Avg price

Great€21.57

avg listing price — sweet spot $15–$100

Price range

Great€13.76–€29.44

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Market size

Good€288K

€288K/yr · 110K searches

Brand share

Okay88%

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

Review moat

Bad4,742.71

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-1.3%

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

Competition

Bad78%

top-5 click share — a locked-up shelf

Competition

The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.

Brands

10 falling

Sellers

12

Top-5 brand share

88%

Open market

9%

  • ProFuel38%
  • GEN GERMAN ELITE NUTRITION33%
  • Nature Love8%
  • Gym Nutrition5%
  • HAVASU NUTRITION4%
  • Horbäach3%
  • Open — no brand owns it (4 brands, 9%)

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%€29K20%€58K30%€86K40%€115K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 14 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -1.3% search growth over the last 90 days.
3K2KPrime Day '24Spike '24Holiday '24Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.6×

Reviews

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

What buyers love

Qualität insgesamt26%

“High quality and efficacy”

Preis-Leistungs-Verhältnis11%

“Preis Super”

beworben Vs Tatsächliches Produkt5%

“Macht seinen job”

Blutdruck5%

“Gut verträglich,fördert spürbar die Durchblutung”

Effizienz5%

“Performance-Verbesserung:”

Dosierung5%

“Die Dose ist recht groß, was bei 360 Kapseln auch notwendig ist”

Linderung von Muskelschmerzen3%

“Muskelaufbau”

Inhaltsstoffe – insgesamt3%

“Solides Citrullin”

Herzgesundheit3%

“Reguliert auf natürliche Weise den Blutdruck”

Löslichkeit3%

“Gute Löslichkeit”

What buyers complain about

Dosierung14%

“Die Dosis: Okay, hier gibts nen kleines Problem”

Gesamtgröße8%

“Tabletten sind groß”

Funktionalität insgesamt7%

“keine nennenswerte Wirkung”

Geschmack insgesamt5%

“Schmeckt widerlich”

Geruch5%

“Stinkt und Geschmack unerträglich”

Preis-Leistungs-Verhältnis4%

“Geldverschwendung”

Einfaches Kauen/Schlucken4%

“nicht wirklich gut zu schlucken”

Säureregulator/Linderung von Magenschmerzen3%

“Magenprobleme”

beworben Vs Tatsächliches Produkt3%

“Absolut irreführend”

Nebenwirkungen3%

“Enttäuschend – keine spürbare Wirkung”