The Claim
L-citrulline supplementation at 4 g/day for three months has no significant effect on body composition parameters—including phase angle, appendicular skeletal muscle mass index, and handgrip strength—in adults recovering from severe COVID-19 when compared to standard care alone.
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.
Taking 4 grams of L-citrulline daily for three months does not change measures of body composition such as muscle mass, phase angle, or handgrip strength in adults recovering from severe COVID-19, compared to those receiving standard care without the supplement.
See the scientific wording
L-citrulline supplementation at 4 g/day for three months does not significantly alter body composition, including phase angle, appendicular skeletal muscle mass index, or handgrip strength, in adults recovering from severe COVID-19 compared to standard care alone.
L-Citrulline is turned into arginine in the kidneys, which the blood vessels use to make nitric oxide. Nitric oxide opens up small blood vessels in the muscles, letting more blood and oxygen flow through during activity. This improves how long and how far a person can walk, but it does not change muscle size, strength, or body composition.
What the research says
1 studyPeople who took L-citrulline every day for three months after having severe COVID-19 didn’t gain more muscle, lose more fat, or get stronger in their hands than those who didn’t take it — so the supplement didn’t change their body composition.
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.