Nitric oxide is a molecule the body produces that plays a role in relaxing blood vessels and supporting healthy circulation.
Where L-Citrulline Fits In
L-Citrulline is an amino acid the body can convert along the pathway that produces nitric oxide.
A Note on Medication
Because this pathway affects blood flow, anyone on blood pressure or heart medication should talk to a doctor before adding an L-Citrulline-containing product to their routine.
A Long-Term View
Like most everyday-support ingredients, any effect builds with consistent use over time, not a single dose.