In short: L-citrulline is an amino acid the body converts into arginine. Small studies look at exercise and blood vessels, but the evidence is limited.
What It Is
Citrulline is an amino acid found in watermelon and made in the body. Supplements often use L-citrulline or a malate salt form.
Why Pair It With Arginine
Part of the arginine you swallow is broken down in the gut. Citrulline is converted into arginine in the kidneys, which is why some formulas combine the two.
What Studies Suggest
Small trials report mild effects on exercise performance or blood pressure in some people. Results are mixed, and none test the finished Melonex product.
Side Effects
Stomach upset is the most reported effect. Higher amounts can cause nausea or loose stools.
In Melonex
L-citrulline DL-malate is the first listed ingredient. The amount is not published.
Key Takeaways
- L-citrulline is an amino acid the body converts into arginine. Small studies look at exercise and blood vessels, but the evidence is limited.
- Always follow the label and ask a professional if unsure.
- Results vary and no supplement replaces healthy habits.
Learn more on our ingredients page or read the honest review.
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