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51

protein water

Worth a look

Shows low returns (0.0%), but brand-locked demand (top 5 brands take 93% of clicks) keeps it on the watch list.

Market size 31Growth 27Conversion 56Competition 32Returns 100Price range 75Avg price 80Brand share 18Review moat 90Quality gap 76

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Review moat

Great208.71

avg incumbent reviews — the moat a new listing must climb

Avg price

Great£17.02

avg listing price — sweet spot $15–$100

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Price range

Great£10.35–£28.59

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

Conversion

Good4.8%

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

Competition

Okay66%

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

Market size

Okay£145K

£145K/yr · 178K searches

Growth

Okay+1.3%

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

Brand share

Bad93%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United Kingdom niche tracking, protein water is a £145K/yr Amazon United Kingdom market (178K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Aug. Verdict: Worth a look — 51/100.

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

protein water market data

Units sold / yr
10K–13K
avg 500–750/product
Revenue / yr
£170K–£213K
units × avg price
Conversion rate
4.8%
Avg BSR
#98
Page quality
0%
Prime
76%
Sponsored
81%
Out of stock
10.8%
Avg brand age
47 months
Avg seller age
161 days

Competition & brand share

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 rising

Sellers

26

Top-5 brand share

93%

Top 20: 100%

Top-5 click share

66%

Top 20: 99%

Open market

4%

  • Vieve42%
  • Applied Nutrition36%
  • WOW HYDRATE8%
  • Myprotein4%
  • Optimum Nutrition3%
  • SCI-MX3%
  • Open — no brand owns it (2 brands, 4%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +1.3% search growth over the last 90 days.
18K13KSpike '24Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Aug · busiest ÷ quietest = 4.7×

Top protein water search terms

  • protein water117K/yr
  • vieve protein water14K/yr
  • protein water sugar free16K/yr
  • wow hydrate protein water12K/yr
  • vieve9K/yr
  • wow hydrate9K/yr
  • protien water3K/yr
All search terms

Top protein water 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.

0%10%£14K20%£29K30%£43K40%£58K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 21 tracked products in this niche — three views at once, no toggling.

What buyers say about protein water

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

What buyers love

Taste-Overall30%

“Taste great and is very refreshing”

Nutritional Content17%

“Good nutrition”

Flavor12%

“Flavour unique”

Ease Of Use4%

“though this is a very convenient”

Quality-Overall4%

“Good quality recovery drink if a little sweet”

Freshness4%

“Refreshing drink”

Sweetness3%

“I really like that there's less sugar in these drinks”

Value For Money3%

“Value wise, I think they are fairly priced for what they are,”

Solubility1%

“it soon dissolves”

Weight Light1%

“Great option and light”

What buyers complain about

Taste-Overall22%

“the taste is a bit off”

Ease Of Use13%

“But very difficult to open a bottle”

Sweetness6%

“doesnt feel heavy or overly sweet”

Flavor4%

“Not as Flavourful as Expected”

Value For Money4%

“pricey”

Nutritional Content3%

“But 20g of protein for 90 kcal is tough to argue with”

Dilute/Watery2%

“In terms of flavour its a bit watery”

Advertised Vs Actual Product2%

“The image in the advertisement says it contains 20g of protein, which isn't true”

Size-Overall2%

“My only complaint is that the bottles are not very big at only 350ml”

Texture/Consistency-Overall1%

“Very slight gel texture to it which is probably unavoidable. dont let that put you off too much”

Top return reasons

Nutritional Content25%
Taste-Overall25%
Flavor13%
Measurement/Reading Accuracy13%
Advertised Vs Actual Product13%
Leak-Proof13%

Common questions

Is protein water profitable to sell on Amazon United Kingdom?
The niche generates £145K/yr across 21 tracked products. 2 of 7 products launched in the last 360 days are still selling. 90-day search growth is +1.3%. Flapen's verdict: Worth a look (51/100).
How competitive is the protein water niche?
8 brands and 26 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 93% of demand.
What do buyers complain about in protein water?
Top complaints mined from reviews: Taste-Overall, Ease Of Use, Sweetness. The return rate is 0.0%.
When does demand for protein water peak?
Demand peaks in Aug; the busiest month runs 4.7× the quietest.
What does it cost to enter the protein water niche?
Listings span £10.35–£28.59; the average listing price is £17.02 (sweet spot $15–$100). The average incumbent carries 209 reviews — the moat a new listing must climb.