Is all in one protein powder profitable to sell on Amazon United Kingdom?

The niche generates £639K/yr across 24 tracked products. 90-day search growth is -13.3%. Flapen's verdict: Worth a look (53/100).

How competitive is the all in one protein powder niche?

9 brands and 51 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 93% of demand.

What do buyers complain about in all in one protein powder?

Top complaints mined from reviews: Taste-Overall, Nutritional Content, Value For Money. The return rate is 0.1%.

When does demand for all in one protein powder peak?

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

What does it cost to enter the all in one protein powder niche?

Listings span £10.08–£44.25; the average listing price is £28.66 (sweet spot $15–$100). The average incumbent carries 3,787 reviews — the moat a new listing must climb.

All in One Protein Powder

Worth a look

Shows low returns (0.1%), but soft demand (-13.3% this quarter) keeps it on the watch list.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Avg price

Incredible£28.66

avg listing price — sweet spot $15–$100

Price range

Great£10.08–£44.25

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

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Market size

Good£639K

£639K/yr · 777K searches

Competition

Okay55%

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

Conversion

Okay2.9%

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

Review moat

Okay3,786.83

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-13.3%

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

Brand share

Bad93%

top-5 brand share — brand-locked demand

Is all in one protein powder profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, all in one protein powder is a £639K/yr Amazon United Kingdom market (777K searches/yr). The top 5 brands hold 93% of demand. Verdict: Worth a look — 53/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

all in one protein powder market size & sales

Units sold, revenue, conversion and listing quality across the tracked shelf.

Units sold / yr: 20K–25K; avg 750–1,000/product
Revenue / yr: £573K–£717K; units × avg price
Conversion rate: 2.9%
Avg BSR: #46
Page quality: 0%
Prime: 92%
Sponsored: 79%
Out of stock: 3.1%
Avg brand age: 55 months
Avg seller age: 156 days

Competition: brands, sellers & click share

The top 5 products take 55% of clicks — established leaders, but buyers still shop beyond them.

Brands

9 falling

Sellers

Top-5 brand share

93%

Top 20: 100%

Top-5 click share

55%

Top 20: 94%

Open market

Optimum Nutrition64%
The Bulk Protein Company9%
Reflex Nutrition9%
USN5%
Mutant5%
Applied Nutrition2%
Open — no brand owns it (3 brands, 5%)

all in one protein powder demand & seasonality

Weekly Amazon search volume, last 104 weeks — -13.3% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top all in one protein powder search terms shoppers use

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

mass gainer273K/yr -12.0%2.0% conv.
serious mass85K/yr -6.6%5.3% conv.
weight gainer76K/yr -9.8%1.5% conv.
mass gainer protein powder60K/yr -24.6%1.8% conv.
weight gain41K/yr -12.0%0.9% conv.
optimum nutrition serious mass24K/yr +4.8%4.7% conv.
whey protein powder 5kg21K/yr +10.2%0.1% conv.
protein powder 5kg29K/yr -12.6%0.5% conv.
mass26K/yr -22.6%0.9% conv.
weight gain protein powder23K/yr -7.2%1.2% conv.

All search terms

Top all in one protein powder products & what they sell for

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

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

Top sellers

by 90-day click share

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins Creatine and Glutamine Vanilla 8 Servings 2.73 kg Packaging May Vary

Optimum Nutrition£28.014.5★12,618 rev

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins Creatine and Glutamine Chocolate 8 Servings 2.73 kg Packaging May Vary

Optimum Nutrition£25.734.4★18,494 rev

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins Creatine and Glutamine Chocolate 16 Servings 5.45 kg

Optimum Nutrition£44.254.5★15,456 rev

Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving 60g Protein Creatine - High Calorie Post Workout or Before Bed Protein Shake (Chocolate Perfection 2 kg)

Reflex Nutrition£20.324.1★656 rev

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins Creatine and Glutamine Banana 16 Servings 5.45 kg Packaging May Vary

Optimum Nutrition£42.754.5★3,231 rev

Newest

by launch date

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins Creatine Monohydrate and Glutamine Vanilla 4 Servings 1.34kg Packaging May Vary

Optimum Nutrition£19.3312,618 rev

1y ago

Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins Creatine and Glutamine Chocolate 4 Servings 1.34 kg Packaging May Vary

Optimum Nutrition£18.7732 rev

1y ago

Applied Nutrition Critical Mass Professional - Weight Gain Protein Powder High Calorie Weight Gainer Lean Mass (2.4kg - 16 Servings) (Chocolate)

Applied Nutrition£24.5567 rev

2y ago

Mutant£27.411,425 rev

4y ago

USN Muscle Fuel Anabolic All-In-One Muscle Mass Gainer Strawberry Flavour - 2kg 54g Protein Powder 5g Creatine Powder & 5g BCAA Powder For Maximum Muscle Growth Post Workout Recovery Drink Mix

USN£24.77568 rev

5y ago

What reviews say buyers love and hate about all in one protein powder

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

What buyers love

Taste-Overall19%

“Taste great mixes well”

Quality-Overall12%

“Good product as described”

Value For Money10%

“Good value”

Nutritional Content9%

“Really good protein powder”

Flavor6%

“Great taste nice flavour”

Weight Gain6%

“I think this will help you gain weight as long as you have this along with your meals”

Weight Loss5%

“Very helpful with getting weight back on”

Blend/Ratio4%

“Perfect blend of everything”

Size-Overall4%

“Great size”

Solubility3%

“Yeah mixes easy”

What buyers complain about

Taste-Overall19%

“very chalky powdery taste”

Nutritional Content10%

“It's not protein”

Value For Money7%

“OVERPRICED”

Flavor4%

“The taste of the dutch chocolate flavour shakes are extremely unpleasant”

Texture/Consistency-Overall4%

“really bad texture”

Weight Loss4%

“Didnt put weight on even though I struggle with eating”

Size-Overall4%

“HALF THE SIZE BE CAREFUL OF DETAILS”

Solubility3%

“it still didnt dissolve well”

Advertised Vs Actual Product3%

“Please tell me it isnt true”

Sweetness3%

“the only bad is that this gainer is extra sweet”

Common all in one protein powder questions

Is all in one protein powder profitable to sell on Amazon United Kingdom?: The niche generates £639K/yr across 24 tracked products. 90-day search growth is -13.3%. Flapen's verdict: Worth a look (53/100).
How competitive is the all in one protein powder niche?: 9 brands and 51 sellers compete. The top 5 products take 55% of clicks and top 5 brands hold 93% of demand.
What do buyers complain about in all in one protein powder?: Top complaints mined from reviews: Taste-Overall, Nutritional Content, Value For Money. The return rate is 0.1%.
When does demand for all in one protein powder peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the all in one protein powder niche?: Listings span £10.08–£44.25; the average listing price is £28.66 (sweet spot $15–$100). The average incumbent carries 3,787 reviews — the moat a new listing must climb.

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