L-Citrulline and Blood Flow: What the Research Shows
L-Citrulline shows up in performance formulas ranging from pre-workout powders to men's daily gummies. Here's the mechanism behind it.
What it is
L-Citrulline is an amino acid that the body converts into L-Arginine, which in turn is a building block for nitric oxide (NO) — a signaling molecule that helps relax and widen blood vessels, supporting circulation.
Why citrulline instead of arginine directly
Some research suggests that supplemental L-Citrulline may raise blood arginine levels more steadily than taking arginine directly, since citrulline bypasses some of the digestive breakdown arginine experiences.
In HorseFil
L-Citrulline is the first-listed ingredient in HorseFil's formula, included specifically to support healthy nitric oxide production and blood flow already within normal levels.
Worth knowing
If you take blood pressure medication, talk to your doctor before adding any new supplement that affects circulation.
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