The Claim
In adults with short bowel syndrome and baseline plasma citrulline below 20 μmol/L, oral citrulline supplementation increases non-oxidative leucine disposal.
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.
In adults with short bowel syndrome and low blood citrulline levels, taking citrulline by mouth increases the rate at which leucine is used for building proteins rather than being burned for energy.
See the scientific wording
In adults with short bowel syndrome and baseline plasma citrulline below 20 μmol/L, oral citrulline supplementation increases non-oxidative leucine disposal, suggesting a potential anabolic effect specifically in those with severe citrulline deficiency.
When citrulline levels are very low, the body cannot make enough arginine, which stops the process that directs leucine into building new proteins. Giving citrulline back lets the body make arginine again, which then turns on the machinery that uses leucine to build muscle and other proteins instead of burning it for energy.
What the research says
1 studyIn people with a very short intestine and extremely low citrulline levels, taking citrulline pills helped their bodies use protein better — but only in those with the lowest levels. Others didn’t see the same benefit.
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.