Short answer: L-Arginine and L-Citrulline are two amino acids sharing one circulation pathway — Arginine converts to nitric oxide directly, while Citrulline extends and sustains that same effect over time.
L-Arginine: the direct nitric-oxide source
L-Arginine is converted by the body into nitric oxide, which relaxes and dilates blood vessels, including those supplying the brain. Better circulation here means more oxygen and nutrients reaching neurons.
L-Citrulline: the sustaining recycler
L-Citrulline gets converted back into arginine within the body, creating a continuous cycle rather than a single spike — sustaining the nitric-oxide effect for longer than arginine alone would provide.
Why pairing them makes formulation sense
Combining a direct nitric-oxide source with a recycling precursor is a common, sensible approach in this ingredient category — sustaining an effect across the day rather than producing one brief peak.
See both in MemoHoney's full formula
Named plainly, alongside Niacin and Beta-Alanine.
🍯 See the Ingredients