L-Citrulline.

Every one of these is a fact the engine could ground.

Each line below was derived from this formula's own record at the time of verification. Nothing here was written by the brand, and nothing can be added that the evidence does not carry.

• Studied in people16 human studies on L-Citrulline back this formula, each one cited.
• A mechanism that is settledHow L-Citrulline works is settled pharmacology.
• Recent work on the recordThe most recent study on this record was published in 2024.
• Why this formatIt is a tablet, so the amount per serving is fixed and it stores well.
• The exact form, describedThe form on the label is L-Citrulline. The record says what that form is and what it suits.
• Full label disclosureEvery ingredient on this label carries its own declared amount.
• Where it comes from and how it is madeL-Citrulline is made by fermentation.
• Positions this formula already qualifies forThis formula already qualifies for positions beyond the one it is sold into, on the evidence it carries.
• A position nobody is holding yetSome of those positions are ones almost nobody is selling to yet.

What the trials show about timing.

Time-to-effect windows the engine read from the trial record. Each is a window a named study measured, cited and dated, never written by the brand.

• L-Citrullinewithin about 1 hour of a single doseMeasured within a day

  In a randomised double-blind crossover trial in 19 recreationally active women, a single 8 g dose of citrulline malate taken 60 minutes before testing raised total work in a 5-repetition isokinetic leg extension protocol compared with placebo, with no difference in peak torque and no difference in the 50-repetition protocol. A separate crossover trial in 10 well-trained men using 12 g 60 minutes before high-intensity cycling found no change in time to exhaustion or power.

  Gills et al., 2023 (J Strength Cond Res)PMID 34319940

  Cunniffe et al., 2016 (J Strength Cond Res)PMID 26808848

  Early

Windows measured in the cited trials. Context for how the active behaves over time, not a statement about any individual and not a claim about this product.

How each ingredient usually behaves over time.

One ingredient, from its own page.

• L-Citrulline

  Plasma arginine peaks around an hour after a dose, which is when the fuller feeling in working muscle turns up. Performance changes build across one to two weeks.

  Its own page, the plain answer on timing ↗

How each ingredient usually behaves over time, from its own page on IngredientMD. General timing for the ingredient, not a measurement of this product.

The same ingredient, carried differently.

What each form is, and where it fits in a formula. Measured findings carry the study that reported them.

• L-Citrulline

  The non-protein amino acid citrulline in its uncombined free form, not bonded to another acid, mineral, or carrier. Every labelled gram is citrulline itself.

  Fits

  Suits a formula that wants citrulline on its own with no added acid weight, so the panel gram and the citrulline gram are the same number. Folds cleanly into capsules and unflavored or lightly flavored powders.

  Trade-off

  It carries no malic acid, so a brand following a citrulline-malate dosing protocol cannot match gram-for-gram and has to convert. The plain powder can taste faintly bitter in a simple drink mix.

  In a randomized double-blind placebo-controlled crossover trial, 10 healthy men took 6 g/day of free-form L-citrulline for 7 days. Tolerance to severe-intensity cycling and total work completed were higher than placebo, while L-arginine at the same dose was not.

  Bailey et al., 2015 (J Appl Physiol)

Descriptions of the form itself, read from the cited studies. Not a comparison between products and not a statement about any individual.

Tablet

It is a tablet, so the amount per serving is fixed and it stores well.