L-Glutamine
Quick Summary
- Category: Amino Acid · Sourcing Origin: China · Form: Powder · Standard Pack Size: 25 kg
- Most abundant free amino acid in the body — conditionally essential under physiological stress
- Evidence strongest for gut barrier function in clinical contexts; sports recovery claims in healthy, well-nourished athletes are less consistently supported
- Slightly sweet, dissolves readily in water
What Is L-Glutamine?
L-Glutamine is a conditionally essential amino acid — the body synthesises it from glutamate, but production can be outpaced during intense stress, illness, or high-volume training. It is the most abundant free amino acid in human blood and skeletal muscle, central to nitrogen transport, energy provision for gut enterocytes and immune cells, and acid-base balance.
Specification & Form
| Attribute | Detail |
|---|---|
| Form | Powder |
| Taste | Slightly sweet, mild |
| Solubility | Readily soluble in water |
| Standard pack size | 25 kg |
| Sourcing origin | China |
Evidence Note
Clinical/gut health evidence: Multiple peer-reviewed studies support L-Glutamine in maintaining intestinal barrier integrity during physiological stress — this is where the evidence base is most robust.
Sports recovery in healthy athletes: Subsequent research has generally found no statistically significant improvements in muscle mass or strength beyond adequate protein intake alone in healthy, well-nourished populations — largely because those individuals are not glutamine-deficient. Claim language should reflect the specific population and context for which evidence exists.
Buyer Checklist
- Intended application confirmed (gut health/clinical vs sports recovery) before writing label claims
- Claims reviewed against applicable evidence base
- COA confirming purity and microbiological limits
- FSSAI-compliant documentation and 25 kg pack confirmed
Frequently Asked Questions
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References
Company Information
- YNP Ingredients, L-Glutamine product page, ynpingredients.com (China, 25 kg, FSSAI documentation)
Industry Information
- Lacey JM, Wilmore DW. *Is glutamine a conditionally essential amino acid?* Nutr Rev. 1990;48(8):297–309.
- Antonio J, Street C. *Glutamine: a potentially useful supplement for athletes.* Can J Appl Physiol. 1999;24(1):1–14 — note: subsequent systematic reviews have qualified findings for healthy populations.