Is citrulline malate profitable to sell on Amazon United States?

The niche generates $444K/yr across 15 tracked products. 90-day search growth is -5.2%. Flapen's verdict: Skip it (48/100).

How competitive is the citrulline malate niche?

7 brands and 9 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 95% of demand.

What do buyers complain about in citrulline malate?

Top complaints mined from reviews: Taste-Overall, Functionality-Overall, Value For Money. The return rate is 0.0%.

When does demand for citrulline malate peak?

Demand is steady year-round — the busiest month runs 1.6× the quietest.

What does it cost to enter the citrulline malate niche?

Listings span $11.17–$30.40; the average listing price is $19.27 (sweet spot $15–$100). The average incumbent carries 3,425 reviews — the moat a new listing must climb.

citrulline malate

Skip it

Brand-locked demand (top 5 brands take 95% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$19.27

avg listing price — sweet spot $15–$100

Conversion

Great9.0%

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

Price range

Great$11.17–$30.40

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

Market size

Good$444K

$444K/yr · 255K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay3,424.93

avg incumbent reviews — the moat a new listing must climb

Competition

Bad71%

top-5 click share — a locked-up shelf

Growth

Bad-5.2%

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

Brand share

Bad95%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, citrulline malate is a $444K/yr Amazon United States market (255K searches/yr). The top 5 brands hold 95% of demand. Verdict: Skip it — 48/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

citrulline malate market data

Units sold / yr: 20K–25K; avg 1,500–2,000/product
Revenue / yr: $385K–$482K; units × avg price
Conversion rate: 9.0%
Avg BSR: #560
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 73 months
Avg seller age: 155 days

Competition & brand share

The top 5 products capture 71% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 falling

Sellers

Top-5 brand share

95%

Top 20: 100%

Top-5 click share

71%

Top 20: 100%

Open market

Nutricost44%
BulkSupplements32%
Type Zero7%
Primaforce6%
Kaged5%
Swanson3%
Open — no brand owns it (1 brand, 2%)

Demand & seasonality

Weekly Amazon search volume, last 100 weeks — -5.2% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.6×

Open Trend

Top citrulline malate search terms

citrulline malate144K/yr -10.6%8.4% conv.
l citrulline malate52K/yr +2.2%7.6% conv.
l-citrulline malate22K/yr +14.6%7.7% conv.
citrulline malate powder12K/yr -19.7%8.0% conv.
citrulina malato8K/yr +3.2%2.8% conv.
citrulina malato para hombre8K/yr +12.3%1.8% conv.
l citrulline malate powder5K/yr -0.8%9.4% conv.
l-citrulline malate powder3K/yr +25.2%10.0% conv.

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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Nutricost L-Citrulline Malate (2:1) Powder (300 Grams)

Nutricost$19.784.6★4,174 rev

BulkSupplements.com L-Citrulline Malate 2:1 Powder - Nitric Oxide Boost Citrulline Malate Supplement - Unflavored & Gluten Free - 3g per Servings 1kg (2.2 lbs) (Pack of 1)

BulkSupplements$30.404.6★8,989 rev

BulkSupplements.com L-Citrulline Malate 2:1 Powder - Nitric Oxide Boost Citrulline Malate Supplement - Unflavored & Gluten Free - 3g per Servings 500g (1.1 lbs) (Pack of 1)

BulkSupplements$22.434.6★8,989 rev

Nutricost L-Citrulline Malate (2:1) Powder (600 Grams)

Nutricost$29.664.6★4,174 rev

Type Zero L-Citrulline Malate Powder 2:1 6X (300g | 6000mg Per Serving | Unflavored) Ultra Clean L Citrulline Nitric Oxide Booster Pre Workout - Nitrous Oxide Vasodilator Supplement

Type Zero$16.824.5★842 rev

Newest

by launch date

Best Naturals L-Citrulline Malate 2:1 Powder 1 Lb

Best Naturals$14.61143 rev

1y ago

BulkSupplements.com L-Citrulline Malate Capsules - as L-Citrulline Malate 2:1 Nitric Oxide Supplement - Gluten Free 8 Capsules per Serving (3000mg) 240 Count (Pack of 1)

BulkSupplements$17.19256 rev

2y ago

Nutricost L-Citrulline 2500mg Per Serving 60 Servings 1250mg Per Tablet 120 Tabs - Non-GMO and Gluten Free Supplement

Nutricost$19.621,055 rev

4y ago

Type Zero L-Citrulline Malate Powder 2:1 6X (300g | 6000mg Per Serving | Unflavored) Ultra Clean L Citrulline Nitric Oxide Booster Pre Workout - Nitrous Oxide Vasodilator Supplement

Type Zero$16.82842 rev

4y ago

Nutricost L-Citrulline 500mg 120 Capsules - Gluten Free Non-GMO 1000mg Per Serving (60 Serv)

Nutricost$12.938,765 rev

7y ago

What buyers say about citrulline malate

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

What buyers love

Quality-Overall26%

“Great value and my go to for bulk powders”

Value For Money12%

“not expensive”

Advertised Vs Actual Product5%

“AS DESCRIBED”

Solubility5%

“it mixes well”

Efficiency5%

“It works well”

Energy Level4%

“seem to have more energy”

Blood Pressure4%

“I get great blood flow”

Vitamin4%

“Decent supplements”

Taste-Overall4%

“Tastes like lemon water, not bad”

Heart Health2%

“It seems to help very well with circulation and blood flow”

What buyers complain about

Taste-Overall14%

“The taste was extremely bitter”

Functionality-Overall10%

“it did not do its job”

Value For Money7%

“Not worth it”

Flavor6%

“It's not actually a flavor”

Dosage5%

“could not tell any difference in blood flow even at 3 doses a day”

Size-Overall4%

“Its way too short”

Quality-Overall4%

“They do have quality control problems though”

Muscle Pain Relief4%

“Not a real good muscle pump”

Sour3%

“SOUR”

Sleep Quality3%

“Cant sleep”

Top return reasons

Certifications33%

Size-Overall33%

Advertised Vs Actual Product33%

Common questions

Is citrulline malate profitable to sell on Amazon United States?: The niche generates $444K/yr across 15 tracked products. 90-day search growth is -5.2%. Flapen's verdict: Skip it (48/100).
How competitive is the citrulline malate niche?: 7 brands and 9 sellers compete. The top 5 products take 71% of clicks and top 5 brands hold 95% of demand.
What do buyers complain about in citrulline malate?: Top complaints mined from reviews: Taste-Overall, Functionality-Overall, Value For Money. The return rate is 0.0%.
When does demand for citrulline malate peak?: Demand is steady year-round — the busiest month runs 1.6× the quietest.
What does it cost to enter the citrulline malate niche?: Listings span $11.17–$30.40; the average listing price is $19.27 (sweet spot $15–$100). The average incumbent carries 3,425 reviews — the moat a new listing must climb.