The Claim
L-glutamine supplementation at 0.3 g/kg body weight per day for three weeks in combat-sport athletes increases salivary nitric oxide concentration.
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 L-glutamine at a dose of 0.3 grams per kilogram of body weight daily for three weeks increases the concentration of nitric oxide in saliva among combat-sport athletes.
See the scientific wording
L-glutamine supplementation at 0.3 g/kg body weight per day for three weeks in combat-sport athletes increases salivary nitric oxide (NO) concentration, likely due to its role as a precursor to arginine, which supports mucosal immune defense against respiratory pathogens.
L-glutamine is absorbed from the gut and converted into arginine in immune and mucosal cells. Arginine is used by enzymes to produce nitric oxide, which builds up in saliva and kills bacteria in the mouth and throat. This process strengthens the body’s first line of defense against germs that cause respiratory infections.
What the research says
1 studyThis study found that athletes who took L-glutamine powder for three weeks had more nitric oxide in their saliva, which helps protect their airways from germs. So yes, L-glutamine seems to help the body make more of this protective molecule.
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.