Glutamine
Gut lining & immune support
FDA Disclaimer: 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. Always consult your physician before starting any supplement.
Glutamine is the most abundant amino acid in the human body and plays a critical role in gut health, immune function, and muscle recovery. It is considered a conditionally essential amino acid — meaning the body can usually produce enough, but during periods of stress, illness, or intense exercise, demand may exceed supply.
Glutamine is the primary fuel source for intestinal cells and is essential for maintaining the integrity of the gut lining. It is also important for immune cell function and nitrogen transport in the body.
Gut Lining Support
Primary fuel source for intestinal cells. May help maintain the integrity of the gut barrier, especially during stress or illness.
Immune Support
Important for immune cell function. Levels can become depleted during intense training or illness.
Muscle Recovery
May support muscle recovery and reduce soreness after intense exercise. Popular among athletes and bodybuilders.
Generally Well Tolerated
Glutamine is very safe at recommended doses. Most people tolerate it well with minimal side effects.
- Take post-workout for muscle recovery
- Can be stacked with Creatine and Protein
- Especially useful during intense training periods
- L-Glutamine is the standard form used in supplements
Glutamine is well-studied for its role in gut health and immune function. A 2019 randomized placebo-controlled trial found that glutamine supplementation normalized intestinal hyperpermeability and significantly reduced symptom severity in patients with post-infectious irritable bowel syndrome. It is also popular among athletes for recovery support.
How Glutamine Compares
| Ingredient | Best For | Key Difference |
|---|---|---|
| Glutamine | Gut Health, Immune, Recovery | Most abundant amino acid; gut fuel |
| Creatine | Strength, Power, Muscle | Increases ATP stores; most researched |
| BCAAs | Muscle recovery, Endurance | Branched-chain amino acids; muscle protein synthesis |
Glutamine is often stacked with Creatine and Protein for comprehensive muscle and gut support.
Full stack recommendations coming soon in our Stacks section.
1. Zhou Q et al. (2019). Randomised placebo-controlled trial of dietary glutamine supplements for postinfectious irritable bowel syndrome. Gut, 68(6), 996–1002.
2. Lacey JM, Wilmore DW (1990). Is glutamine a conditionally essential amino acid? Nutr Rev, 48(8), 297–309.
3. Antonio J, Street C (1999). Glutamine: a potentially useful supplement for athletes. Can J Appl Physiol, 24(1), 1–14.
All references are peer-reviewed studies or position stands from reputable organizations.
Evidence-based supplement recommendations from a former physical store owner. No hype. No BS. Just facts.
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