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citrulline malate

Skip it

Prices mostly outside the sweet spot ($6.52–$16.42) — this niche doesn't clear our bar today.

Market size 26Growth 17Conversion 96Competition 19Returns 100Price range 14Avg price 43Brand share 24Review moat 44Quality gap 53

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Incredible14.3%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Review moat

Okay2,099.83

avg incumbent reviews — the moat a new listing must climb

Avg price

Okay£11.13

avg listing price — sweet spot $15–$100

Market size

Okay£105K

£105K/yr · 66K searches

Brand share

Bad90%

top-5 brand share — brand-locked demand

Competition

Bad77%

top-5 click share — a locked-up shelf

Growth

Bad-15.8%

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

Price range

Bad£6.52–£16.42

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

According to Flapen's Amazon United Kingdom niche tracking, citrulline malate is a £105K/yr Amazon United Kingdom market (66K searches/yr). The top 5 brands hold 90% of demand. Verdict: Skip it — 42/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

citrulline malate market data

Units sold / yr
6K–8K
avg 250–500/product
Revenue / yr
£67K–£89K
units × avg price
Conversion rate
14.3%
Avg BSR
#12
Page quality
0%
Prime
100%
Sponsored
67%
Out of stock
3.2%
Avg brand age
55 months
Avg seller age
149 days

Competition & brand share

The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.

Brands

8 falling

Sellers

22

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

77%

Top 20: 100%

Open market

5%

  • Applied Nutrition28%
  • Bulk22%
  • ALPHA0122%
  • BANDINI12%
  • Peak Supps6%
  • WeightWorld5%
  • Open — no brand owns it (2 brands, 5%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -15.8% search growth over the last 90 days.
2K1KSpike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Top citrulline malate search terms

  • citrulline malate52K/yr
  • citrulline malate powder7K/yr
  • l citrulline malate4K/yr
  • l-citrulline malate3K/yr
All search terms

Top citrulline malate 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%£11K20%£21K30%£32K40%£42K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 12 tracked products in this niche — three views at once, no toggling.

What buyers say about citrulline malate

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

What buyers love

Quality-Overall17%

“Great quality + quick delivery”

Value For Money8%

“Worth it”

Blood Pressure6%

“Blood flow great”

Energy Level6%

“I feel as though I have a bit more energy”

Strength5%

“Effective”

Ingredients-Overall4%

“Pure L-citrulline malate powder, the 2:1 citrulline-to-malate ratio is the commonly used standard, and the fact that its fermented, unflavoured, and free from fillers will appeal to anyone who like me prefers to control exactly what theyre consuming”

Regulates Digestion4%

“digestive transit will improve”

Muscle Pain Relief4%

“Relaxes and very good after gym”

Ease Of Use4%

“Simple to use”

Solubility4%

“Mixing it up is a breeze - it dissolves cleanly in water or juice”

What buyers complain about

Smell12%

“earthy smell that I found extremely unpleasant”

Functionality-Overall10%

“Not worked for me”

Taste-Overall9%

“The taste is a little tart”

Sour8%

“It does have that natural sour tang because of the malate”

Side Effects7%

“it had immediate effects”

Ingredients-Overall5%

“Turns out their ingredients are bad”

Quality-Overall2%

“Rubbish”

Value For Money2%

“come with a slightly higher price”

Dosage2%

“I don't really like taking large pills”

Flavor1%

“As it's unflavoured there's no taste”

Common questions

Is citrulline malate profitable to sell on Amazon United Kingdom?
The niche generates £105K/yr across 12 tracked products. 90-day search growth is -15.8%. Flapen's verdict: Skip it (42/100).
How competitive is the citrulline malate niche?
8 brands and 22 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 90% of demand.
What do buyers complain about in citrulline malate?
Top complaints mined from reviews: Smell, Functionality-Overall, Taste-Overall. The return rate is 0.1%.
When does demand for citrulline malate peak?
Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the citrulline malate niche?
Listings span £6.52–£16.42; the average listing price is £11.13 (sweet spot $15–$100). The average incumbent carries 2,100 reviews — the moat a new listing must climb.