L - Citrulline - Day One Performance

L-Citrulline

60 Servings

Pure L-Citrulline. Not Malate. Maximum output.

Day One Citrulline delivers 3g of pure, unbuffered L-Citrulline per serve. L-Citrulline supports nitric oxide production by converting to L-Arginine with superior oral bioavailability, promoting increased blood flow, oxygen delivery, and endurance during training.

$49.95

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Pure Citrulline. No Malate. Just Maximum Output.

Day One Citrulline delivers 3g of 100% pure, unbuffered L-Citrulline per serve. This is not Citrulline Malate. There is no malic acid diluting the active ingredient. Every scoop delivers the full Citrulline dose with nothing else added.

L-Citrulline supports nitric oxide production by converting to L-Arginine in the kidneys with superior bioavailability compared to direct arginine supplementation. Higher nitric oxide levels promote vasodilation, increasing blood flow, oxygen delivery, and nutrient transport to working muscles during training.

Unflavoured, stack friendly, and designed for versatile dosing. Made in house at our Melbourne facility and third party tested per batch.

Suggested Use: Mix 1 to 2 scoops (3 to 6g) with water or your preferred beverage 20 to 30 minutes before training. For best results, stay well hydrated.

QUALITY REDEFINED
Designed, tested, and manufactured in-house to exceed industry standards.

SCIENTIFICALLY BACKED
Crafted with evidence-based ingredients for optimal health and performance.

UNCOMPROMISED FORMULAS
Science backed ingredients, clinical dosages, and real results—0% filler, 100% performance.

PURE INGREDIENTS
Sourced globally, crafted with the highest quality standards.

Key Benefits

  • Superior Nitric Oxide Support
    L-Citrulline converts to L-Arginine in the kidneys, driving nitric oxide synthesis more effectively than oral arginine supplementation. Greater nitric oxide means better vasodilation, blood flow, and training performance.
  • Pure L-Citrulline, Not Malate
    Citrulline Malate blends contain malic acid which reduces the actual Citrulline content per serve. Day One delivers 100% pure L-Citrulline with no buffering agents or added acids.
  • Pure, High-Purity Formula
    No fillers. No blends. No unnecessary additives. Just clean, pharmaceutical-grade Acetyl L-Carnitine, third-party tested and transparently labelled for those who demand the highest standard.
  • Versatile Dosing, 100 Serves
    At 3g per serve with 100 servings per tub, you can scale your dose based on training intensity and individual needs. Unflavoured for easy stacking with any pre training protocol.
The Science

L-Citrulline is a non essential amino acid that plays a key role in the urea cycle and nitric oxide pathway. When ingested, it is converted to L-Arginine in the kidneys, which then serves as the substrate for nitric oxide synthase. This produces nitric oxide, a signalling molecule that triggers vasodilation, the widening of blood vessels.

Unlike direct arginine supplementation, L-Citrulline is not subject to significant first pass metabolism in the gut, resulting in higher plasma arginine levels and more sustained nitric oxide production. Day One Citrulline is manufactured in house at our Melbourne facility and third party tested per batch.

ESSENTIALS SERIES PROMISE

The Day One Essential Series delivers clean, single ingredient products made in house at our Melbourne facility. Third party tested, transparently labelled, and formulated without compromise. Pure ingredients, real results.

Greatness starts here.

FAQs

What's the difference between L-Citrulline and Citrulline Malate?

Pure L-Citrulline contains no added malic acid, giving you 100% of the active ingredient per serve. Citrulline Malate blends dilute the Citrulline content with malic acid, meaning you get less active ingredient per gram.

When should I take Citrulline?

20 to 30 minutes before training for best results. Consistency also supports cumulative nitric oxide benefits.

Can I stack this with other pre workout ingredients?

Yes. L-Citrulline pairs well with Beta Alanine, Creatine, and other Essential Series powders for a complete custom pre training stack.

Does it mix well?

Yes. Unflavoured and dissolves cleanly in water or any beverage without altering the taste.

Is this Australian made?

Yes. Manufactured in house at our Melbourne facility under strict quality controls.