Capsules · Pump & Recovery

L-Citrulline & L-Arginine Stack

4.7 · 560 reviews

The pump stack, in a capsule. L-citrulline and L-arginine work together to boost nitric oxide — widening blood vessels for bigger pumps, better blood flow and faster post-workout recovery. No giant pre-workout scoop required.

Nitric oxide & pumps
Blood flow & endurance
Post-workout recovery

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1 jar · starter 30 servings · 60 vegan capsules £39.99 Best value 3 jars · best value £36.00 / each £108.00£119.97

£39.99

30 servings · 60 vegan capsules · ships in 1–2 days

The nitric oxide stack

Two routes to better pumps

Nitric oxide tells your blood vessels to relax and widen — more flow, more oxygen and nutrients to working muscles, and that skin-tight pump. We stack L-citrulline (which your body converts into arginine, the most reliable way to raise NO) with L-arginine itself and AAKG, so you hit the nitric-oxide pathway from two directions for better pumps, endurance and recovery.

How it works

Stack capsules

Pre-workout pumps, no scoop

All the blood-flow benefits of a citrulline-arginine pre-workout, without the giant tub or the jittery stimulants — just two clean vegan capsules.

— 1 bottle = 60 vegan capsules (30 servings)
— 2 capsules = 400 mg citrulline + 400 mg arginine

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What's inside?

A focused NO stack

Citrulline and two forms of arginine for nitric oxide and blood flow.*

L-Citrulline Malate

DL-malate400 mg

Converts into arginine in the body for a sustained rise in nitric oxide — plus malate to support energy and reduce fatigue.

L-Arginine HCl

hydrochloride350 mg

A direct source of arginine, the amino acid your body uses to produce nitric oxide for blood flow and pumps.

L-Arginine AKG

alpha-ketoglutarate50 mg

Arginine bound to alpha-ketoglutarate — a popular form in pump formulas to support nitric oxide and circulation.

Supplement Facts

Serving Size: 2 Capsules · Servings Per Container: 30

Amount Per Serving% DV

L-Citrulline DL-Malate400 mg**

L-Arginine Hydrochloride350 mg**

L-Arginine Alpha-Ketoglutarate50 mg**

** Daily Value (DV) not established.

Other Ingredients: Cellulose (vegetable capsule), Brown Rice Flour.

A clean pump stack

400 mg L-citrulline DL-malate plus 400 mg of arginine (350 mg HCl + 50 mg AAKG) in a vegan vegetable capsule — no stimulants, no fillers beyond the capsule. Made in the USA — 60 capsules.

WARNING: If you are pregnant or nursing, under 18, take blood-pressure or erectile-dysfunction medication, or have a medical condition, consult a physician before use.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

How to take

Two capsules pre-workout

capsules · pre-workout

Two capsules with water

Take 2 capsules with 6–8 oz of water.

~30 min before training

Take them about 30 minutes before your workout so nitric oxide is up when you start.

On an empty stomach

Amino acids absorb best on a relatively empty stomach — ideal between meals or before eating.

Tracked over 8 weeks

Pumps and recovery, building up

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Illustrative, self-reported data for presentation only — not a clinical claim.

FAQ

Good to know

They hit the nitric-oxide pathway from two angles: citrulline reliably raises arginine levels in the blood, while direct arginine and AAKG add more raw material — together they support better pumps and blood flow than either alone.
It's the blood-flow part of a pre-workout — the citrulline-arginine pump stack — without caffeine, sweeteners or a big scoop. Stack it with caffeine if you want stimulation too.
About 30 minutes before training, ideally on a relatively empty stomach so the aminos absorb well.
Yes — it's in a vegetable cellulose capsule with no animal ingredients.
If you're pregnant or nursing, under 18, or take blood-pressure or erectile-dysfunction medication, consult a physician before use, as it affects blood flow.