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L-Citrulline & L-Arginine Capsules, front label
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L-Citrulline & L-Arginine Capsules

L-Citrulline & L-Arginine Capsules pair 400 mg of L-citrulline DL-malate with two forms of arginine — 350 mg of L-arginine hydrochloride and 50 mg of L-arginine alpha-ketoglutarate — in a two-capsule serving. Sixty vegan capsules, thirty servings, no flavored powder and no scoop to dig out of a tub.

  • Gluten-Free
  • Vegetarian
  • Allergen-Free
  • GMONon-GMO
  • Vegan
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* 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.

What you get in every serving

  • 400 mg L-Citrulline DL-Malate
  • 350 mg L-Arginine Hydrochloride
  • 50 mg L-Arginine Alpha-Ketoglutarate (AAKG)
  • Serving size is two (2) capsules — 60 capsules per bottle, 30 servings
  • Two other ingredients in total: cellulose (vegetable capsule) and brown rice flour
  • Vegan, gluten free, non-GMO
  • Daily Value not established for any of the three amino acid ingredients (**)

The two amino acids

L-citrulline is an amino acid first isolated from watermelon — Citrullus lanatus, which is exactly where the name came from. L-arginine is an amino acid as well, one that occurs in nuts, seeds, legumes and meat, and one of the most commonly sold amino acids on its own.

They're close chemical relatives. Line the two side chains up and they differ by a single group: citrulline carries a ureido group where arginine carries a guanidino group. That family resemblance is why you so often see the two sold together rather than one or the other.

Why three forms and not one

Amino acids are rarely packed as the bare molecule. They're bound to a partner that makes them a stable, measurable powder, and the panel names the partner every time.

  • DL-Malate — citrulline paired with malic acid, the tart acid in green apples, as a salt. "DL" means both mirror-image forms of that acid are present.
  • Hydrochloride — arginine as its HCl salt, the standard crystalline form for capsules and powders.
  • Alpha-Ketoglutarate — arginine bound to alpha-ketoglutaric acid, a five-carbon acid from the citric acid cycle. You'll see it abbreviated AAKG on most labels.

Three rows, three named forms, three printed amounts. Nothing here hides behind a proprietary blend.

How it's taken

Two capsules daily with 6-8 oz of water. Capsules mean there's no flavor to like or dislike — no sour blue-raspberry powder, nothing to dissolve, nothing sweetened, and no sticky scoop. The panel is three rows long, so there's no caffeine in here and no stimulant of any kind; take it whenever it suits your day. The shell is cellulose rather than gelatin, so it fits a vegan routine, and brown rice flour is the only other thing in the capsule.

Who it's for

Lifters, runners and cyclists who shop the nitric oxide and pre-workout shelf but don't want a flavored tub or a stimulant in the mix. Anyone already buying citrulline and arginine as two separate bottles — this is both, in one capsule, at doses printed in milligrams. And anyone who travels or trains away from a kitchen, where a bottle of capsules is a great deal easier to carry than a powder.

How to use it

As a dietary supplement adults take two (2) capsules daily. For best results, take with 6-8 oz (177-237ml) of water or as directed by healthcare professional.

What's in it

Cellulose (vegetable capsule), Brown Rice Flour.

60 Capsules · 30 Servings · Serving size 2 capsules

Caution: Do not exceed recommended dose. Consult a physician if pregnant, nursing, under 18, or have a medical condition. KEEP OUT OF REACH OF CHILDREN. DO NOT USE IF SAFETY SEAL IS DAMAGED OR MISSING. STORE IN A COOL, DRY PLACE.

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

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