Blood 120(19):41044115 Phng LK et al (2009) Nrarp coordinates endothelial Notch and Wnt signaling to control vessel density in angiogenesis
If your results look slower or smaller than someone elses, its almost always one of these factors

Supplementation supports muscle recovery, glycogen replenishment, and preservation of lean muscle mass.* By supporting protein synthesis pathways, glutamine plays a foundational role in recovery protocols, athletic performance, and overall metabolic resilience.* Gastrointestinal Integrity & Barrier Function Glutamine serves as a primary fuel source for intestinal epithelial cells, helping maintain the integrity of the intestinal lining and supporting mucosal health.* Healthy glutamine levels help sustain the barrier between the gastrointestinal tract and systemic circulation, supporting the bodys natural defense against unwanted compounds and promoting optimal nutrient absorption.* Glutathione Production & Cellular Protection Glutamine is a critical precursor in the production of glutathione, one of the bodys most important endogenous antioxidants.* Glutathione supports cellular protection against oxidative stress and plays a key role in maintaining liver function and detoxification pathways.* Clean, Practitioner-Grade Powder Format* Free-form L-glutamine derived from beneficial bacteria with no unnecessary synthetic inputs.** Rigorous Quality Testing Verified for identity, purity, potency, and contaminants to ensure practitioner-grade quality.* Franco, Rodrigo & Schoneveld, O & Pappa, Aglaia & Panayiotidis, Mihalis

It plays a role in your bone health, brain function, metabolism, and moreincluding your skin health
It can also assist the body in converting proteins, fats and carbohydrates into energy and is necessary for healthy skin and eyes
While both can help, glutamine is generally considered the primary choice for gut lining support