ByDr. Brennan Commerford, D.C.·Last reviewed: July 2026

L-Glutamine: verification pending

We’re confirming the science for this compound before we publish a form ranking. Our team reviews every ranked page against peer-reviewed absorption data — this one is still under review, so we are not showing a score yet.

Check back soon. Rankings are reviewed by Dr. Brennan Commerford, D.C.

References

  1. A randomized trial in athletes undergoing intensive training reported that three weeks of L-glutamine supplementation was associated with higher salivary immunoglobulin A and an improved testosterone-to-cortisol ratio, supporting glutamine's role in normal mucosal immune defense and hormonal balance during intensive training. PubMed
  2. A randomized, double-blind, placebo-controlled crossover trial reported that oral L-glutamine supplementation was associated with faster recovery of muscle strength and lower muscle soreness ratings following strenuous eccentric exercise, supporting glutamine's role in normal post-exercise muscle recovery. PubMed
  3. Plasma L-glutamine significantly elevated (~20%, p=0.046) after oral L-glutamine supplementation; clean absorption study in healthy subjects PubMed

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.