The Claim
A single 30-gram dose of microencapsulated watermelon rind containing 4 grams of L-citrulline increases flow-mediated dilation by approximately 1.5% in healthy young adults within 60 minutes and does not alter tissue oxygen saturation.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Consuming 30 grams of microencapsulated watermelon rind with 4 grams of L-citrulline increases blood vessel dilation by about 1.5% in healthy young adults within one hour and does not change tissue oxygen levels.
See the scientific wording
A single 30-gram dose of microencapsulated watermelon rind containing 4 grams of L-citrulline improves flow-mediated dilation by approximately 1.5% in healthy young adults within 60 minutes, indicating a transient enhancement of endothelial function, but does not alter tissue oxygen saturation.
After ingestion, L-citrulline enters the bloodstream and is turned into L-arginine in the kidneys. L-arginine is used by blood vessel lining cells to make nitric oxide, which spreads to nearby muscle cells around the artery and causes them to relax. This relaxation allows the artery to widen, increasing blood flow and improving flow-mediated dilation.
What the research says
1 studyEating a special powder made from watermelon rind with 4 grams of L-citrulline made blood vessels relax a little better for about an hour in healthy young people, but didn’t change how much oxygen reached their tissues.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.