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Weight Gainer

Weight Gainer shows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Flapen Score

64
Worth a look

Top 4% of 2,966 Drogerie & Körperpflege niches · +15 vs the category median of 49

Market size 75Growth 20Conversion 43Competition 85Returns 100Price range 93Avg price 95Brand share 39Review moat 43Quality gap 76
This niche Category average · 2,966 niches

Is Weight Gainer profitable on Amazon?

According to Flapen's Amazon Germany niche tracking, Weight Gainer is a €841K/yr Amazon Germany market (593K searches/yr). The top 5 brands hold 81% of demand. Verdict: Worth a look — 64/100.

Weight Gainer: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Worth a look. Search demand moved -9.5% over the last 90 days and 3.4% of searches end in a purchase.

€841K

revenue / yr

Units sold / yr20K
Search volume / yr-9.5%593K
Conversion rate3.4%
Avg price€41.26

Who owns the niche?

The top 5 brands hold 81% of demand, so 19% of the market is open.

19%

open market share

Brands · sellers16 · 59
Top-5 product click share30%
Open market19%
Avg brand age80 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.3★ — the gap to enter on.

0/100

page quality · 47 products

Sponsored placement96%
New entrants (1y)8· 7 succeeded
Avg rating4.3★
Avg reviews2,211

Top Weight Gainer products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.

€0€17K€34K€50K€67K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

16 falling

Sellers

59

Top-5 brand share

81%

Top 20: 100%

Top-5 click share

30%

Top 20: 75%

Open market

15%

  • Optimum Nutrition45%
  • Mammut Nutrition15%
  • Weider12%
  • GEN GERMAN ELITE NUTRITION5%
  • SAM'S4%
  • Bulk3%
  • Open — no brand owns it (10 brands, 15%)

Weight Gainer demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume593KCVR3.4%Products47Brands16Top 5 Brands81%OOS Rate7.2%Rating4.3★Reviews2,211Avg BSR#77
15K10KPrime Day '24Spike '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Top Weight Gainer search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • mass gainer169K/yr
  • weight gainer176K/yr
  • serious mass34K/yr
  • gainer33K/yr
  • mass35K/yr
  • masse shake22K/yr
  • optimum nutrition serious mass17K/yr
  • mass gainer protein16K/yr
  • mega mass 400011K/yr
  • mass protein11K/yr

What reviews say buyers love and hate about Weight Gainer

What buyers mention most, as a share of all reviews.

What buyers love

75% of reviews
Geschmack insgesamt22%

schmeckt super

Ernährungs Gehalt13%

Protein

Geschmack11%

Habe Schokogeschmack

Qualität insgesamt9%

Top Produkt

Löslichkeit6%

lässt sich super cremig mixen

What buyers complain about

50% of reviews
Preis-Leistungs-Verhältnis12%

Preisanstieg

Geschmack insgesamt12%

Ungenießbar

Geschmack6%

Geschmack unvergleichlich schlecht

Süße5%

Sehr süß und sandig im Mund

Ernährungs Gehalt4%

obwohl sie sonst keine typischen Protein- oder Weight-Gainer-Shakes mag.

Weight Gainer return rate & reasons

Why buyers send it back, as a share of all return requests.

0.1%

Return rate

0%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Geschmack
25%
2Geschmack insgesamt
13%
3Süße
13%
4Geruch
6%
5Preis-Leistungs-Verhältnis
6%

Common Weight Gainer questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Weight Gainer 64/100 on Amazon Germany — Worth a look. The niche generates €841K/yr across 47 tracked products. 7 of 8 products launched in the last 360 days are still selling. Search demand moved -9.5% over the last 90 days.
Search demand for Weight Gainer on Amazon Germany is steady year-round — the busiest month runs 1.3× the quietest.