Is serotonin profitable to sell on Amazon Germany?

The niche generates €217K/yr across 17 tracked products. 3 of 5 products launched in the last 360 days are still selling. 90-day search growth is -11.2%. Flapen's verdict: Worth a look (51/100).

How competitive is the serotonin niche?

9 brands and 14 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 94% of demand.

What do buyers complain about in serotonin?

Top complaints mined from reviews: Funktionalität insgesamt, Nebenwirkungen, Dosierung. The return rate is 0.1%.

When does demand for serotonin peak?

Demand peaks in Nov–Dec; the busiest month runs 2.1× the quietest.

What does it cost to enter the serotonin niche?

Listings span €15.17–€44.74; the average listing price is €24.52 (sweet spot $15–$100). The average incumbent carries 766 reviews — the moat a new listing must climb.

serotonin

Worth a look

Shows low returns (0.1%), but brand-locked demand (top 5 brands take 94% of clicks) keeps it on the watch list.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Avg price

Incredible€24.52

avg listing price — sweet spot $15–$100

Price range

Incredible€15.17–€44.74

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

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Review moat

Good765.88

avg incumbent reviews — the moat a new listing must climb

Conversion

Good5.4%

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

Market size

Okay€217K

€217K/yr · 163K searches

Competition

Bad70%

top-5 click share — a locked-up shelf

Growth

Bad-11.2%

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

Brand share

Bad94%

top-5 brand share — brand-locked demand

According to Flapen's Amazon Germany niche tracking, serotonin is a €217K/yr Amazon Germany market (163K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Nov–Dec. Verdict: Worth a look — 51/100.

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

serotonin market data

Units sold / yr: 10K–13K; avg 500–750/product
Revenue / yr: €245K–€307K; units × avg price
Conversion rate: 5.4%
Avg BSR: #150
Page quality: 0%
Prime: 88%
Sponsored: 100%
Out of stock: 10.1%
Avg brand age: 39 months
Avg seller age: 184 days

Competition & brand share

The top 5 products capture 70% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 rising

Sellers

Top-5 brand share

94%

Top 20: 100%

Top-5 click share

70%

Top 20: 100%

Open market

serotalin75%
supplenatura. Rheinland6%
CLAV5%
natural elements4%
Nord Vital3%
Sensilab3%
Open — no brand owns it (3 brands, 4%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -11.2% search growth over the last 90 days.

Peak months: Nov, Dec · busiest ÷ quietest = 2.1×

Open Trend

Top serotonin search terms

serotalin39K/yr +4.8%5.3% conv.
serotonin39K/yr -26.2%2.9% conv.
serotalin active men kapseln32K/yr -11.1%3.5% conv.
serotonin kapseln13K/yr -10.2%4.0% conv.
seratolin. kapseln aktiv men9K/yr -6.2%3.6% conv.
serotonin hochdosiert7K/yr -41.1%3.5% conv.
seratolin4K/yr +50.9%5.1% conv.
serotonin active men4K/yr -21.7%2.3% conv.
serotalin active men t-kapseln3K/yr -18.1%3.6% conv.
sertralin3K/yr +4.7%1.8% conv.

All search terms

Top serotonin 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 17 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

serotalin Active Brain Performance (ehem. Happy Energy) - 5-HTP - L-Phenylalanin - Serotonin & Dopamin Vorstufe - Energie Komplex - Hochdosiert - Vegan & Made in Germany - 60 Kapseln (2 Monate)

serotalin€23.764.0★3,616 rev

serotalin Active Men T-Kapseln Night | Ashwagandha Kapseln hochdosiert - 500 mg KSM-66 (5% Withanolide) | Magnesium Zink L-Theanin & OPC | Made in Germany | 60 Kapseln

serotalin€22.464.0★38 rev

serotalin Active Men Prosta Formula - Prostata Komplex Kapseln für Männer Mit Sägepalme Kürbiskernextrakt & Brennnesselblätter - Vegan & Made in Germany - 60 Stück

serotalin€26.834.2★55 rev

serotalin Active Men All-in-One Bundle für Männer - 60er Kapseln mit Maca & Shilajit + T-Drink mit Kreatin & L-Citrullin - Für Sport & Alltag

serotalin€39.244.2★45 rev

5 HTP (Serotonin) 180 Kapseln á 500mg | 100% PFLANZLICHES Griffonia | 6 Monatsvorrat | Laborgeprüft & in DE Produziert | 5HTP von SUPPLENATURA

supplenatura. Rheinland€23.464.5★175 rev

Newest

by launch date

5 HTP Formel aus Griffonia - Stimmungskapseln* mit Magnesiumbisglycinat und Vitamin B6 - Vegan - 120 Kapseln Griffonia 5HTP hochdosiert - Naturklar

Naturklar€17.1746 rev

6mo ago

serotalin Active Men Prosta Formula - Prostata Komplex Kapseln für Männer Mit Sägepalme Kürbiskernextrakt & Brennnesselblätter - Vegan & Made in Germany - 60 Stück

serotalin€26.8355 rev

7mo ago

Sensilab MoodLux Serotonin-Komplex für gute Laune mit L-Tryptophan Safran Rhodiola Ginkgo Selen Magnesium L-Tyrosin und Vitamine 60 Kapseln Serotonin Stimmungsaufheller

Sensilab€18.9558 rev

7mo ago

serotalin Men Day & Night Vorteilspaket - Active Men T-Kapseln mit Maca & Night mit Ashwagandha hochdosiert - Made in Germany - 2 x 60 Kapseln

serotalin€44.7432 rev

10mo ago

serotalin Active Men T-Kapseln Night | Ashwagandha Kapseln hochdosiert - 500 mg KSM-66 (5% Withanolide) | Magnesium Zink L-Theanin & OPC | Made in Germany | 60 Kapseln

serotalin€22.4638 rev

10mo ago

What buyers say about serotonin

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

What buyers love

Qualität insgesamt12%

“Super Produkt”

Spannung/Angst11%

“Ideal für stressige Arbeitstage”

Fokusverbesserung8%

“Hilft mir, mich mental stabiler und positiver zu fühlen”

Schlafqualität7%

“Ich stehe nachts seltener auf”

Vitamin5%

“Top Supplement”

Vegan/Biologisch5%

“100 % vegan, 100 % Ergebnis”

Inhaltsstoffe – insgesamt5%

“Dieses Produkt kombiniert eine größere Anzahl verschiedener Inhaltsstoffe wie Pflanzenextrakte, Aminosäuren sowie Vitamine und Mineralstoffe in einer einzigen Formel”

Dosierung4%

“Qualitativ hochwertiges Produkt – Sanfte Unterstützung bei individueller Dosierung”

Energieniveau4%

“Sanfter Energieschub”

Benutzerfreundlichkeit3%

“gut in die Routine integrierbar.”

What buyers complain about

Funktionalität insgesamt19%

“null Effekt”

Nebenwirkungen13%

“Unmittelbare Effekte spürt man üblicherweise nicht”

Dosierung8%

“Null Wirkung bei mir Trotz längerer Einnahme und höherer Dosierung”

Preis-Leistungs-Verhältnis4%

“Der Preis des Produktes ist gleich geblieben, der Inhalt ist um 21% weniger geworden”

Schlafqualität4%

“Ich nehme solche Präparate eher phasenweise in stressigen Zeiten oder wenn der Schlafrhythmus mal unruhiger wird”

Allergien4%

“Ich war vorher sehr oft gereizt”

Vitamin3%

“Ich bin bei Nahrungsergänzungsmitteln eigentlich sehr skeptisch”

Spannung/Angst2%

“und nur bei Stress lauter”

Qualität insgesamt2%

“hätte es wahrscheinlich nicht an der Produktqualität gelegen”

Herzgesundheit1%

“in der Nacht zu Herzrasen”

Common questions

Is serotonin profitable to sell on Amazon Germany?: The niche generates €217K/yr across 17 tracked products. 3 of 5 products launched in the last 360 days are still selling. 90-day search growth is -11.2%. Flapen's verdict: Worth a look (51/100).
How competitive is the serotonin niche?: 9 brands and 14 sellers compete. The top 5 products take 70% of clicks and top 5 brands hold 94% of demand.
What do buyers complain about in serotonin?: Top complaints mined from reviews: Funktionalität insgesamt, Nebenwirkungen, Dosierung. The return rate is 0.1%.
When does demand for serotonin peak?: Demand peaks in Nov–Dec; the busiest month runs 2.1× the quietest.
What does it cost to enter the serotonin niche?: Listings span €15.17–€44.74; the average listing price is €24.52 (sweet spot $15–$100). The average incumbent carries 766 reviews — the moat a new listing must climb.