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Ingredient Guide

Arginine & Citrulline

September 14, 2026 · 4 min read

L-Arginine and L-Citrulline are two of Cognidyne's six named ingredients, and together they form the core of its circulation-support approach. Here's a closer look at both.

L-Arginine

An amino acid the body converts directly into nitric oxide, the molecule responsible for dilating blood vessels. Wider circulation pathways support healthy oxygen and nutrient delivery to brain cells.

L-Citrulline

A precursor the body recycles back into arginine, creating a continuous cycle of nitric oxide production. This helps keep circulation steady even during moments of stress or fatigue.

Why They're Paired Together

Arginine provides a direct source of nitric oxide, while citrulline extends and recycles that effect over time — together they support more consistent circulation than either ingredient alone, alongside Niacin and Beta-Alanine.

An Honest Note

These citations concern research on the individual ingredients, not a clinical trial of the finished Cognidyne product. Individual results vary.

Curious about the rest of the formula? See the full ingredient breakdown.

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