Pure L-Glutamine amino acid (500mg) for muscle recovery and gut barrier integrity.
L-Glutamine is the most abundant free amino acid in muscle tissue and the preferred fuel for rapidly dividing intestinal epithelial cells. Each 500mg capsule delivers pharmaceutical-grade pure amino acid with no fillers, binders or flow agents — ideal for athletes, active individuals and anyone supporting post-exercise recovery or intestinal permeability.
Why This Formula
✔ 500mg pure L-Glutamine — no carrier compounds, no synthetic additives
✔ Supports muscle glycogen recovery — glutamine replenishes intramuscular glycogen stores post-exertion
✔ Gut lining maintenance — glutamine is the primary fuel for enterocytes and immune cells of the GI tract
✔ Flexible dosing — take 1-6 capsules daily depending on training intensity and recovery needs
✔ Vegan capsule shell — HPMC, free from gelatin and animal products
Who It's For
Athletes, regular exercisers, and anyone pursuing intensive training. Also valuable for those with compromised gut barrier integrity or seeking to support intestinal immune function and nutrient absorption capacity.
The xSpan Labs Standard
Small-batch manufactured in the UK to GMP and ISO 9001 standards. No unnecessary fillers, no artificial colours, no inflated marketing — just premium-grade ingredients in their most effective forms. Every batch is tested for purity and potency.
L-Glutamine , 500mg 90 Capsules
Directions
Adults, take 1-6 capsules daily with water. Best taken on an empty stomach or with a light carbohydrate only snack. Do not exceed recommended daily dose.
Ingredients
L-Glutamine 500mg,
Other Ingredients: Capsule Shell of Hydroxypropyl Methylcellulose.
Cautions
Always consult your health practitioner before taking nutritional supplements if you are taking medication or are under medical supervision. Pregnant or lactating mothers should consult a health practitioner before using health supplements. You should not take supplements as a substitute for a varied balanced diet. Store in a cool dry place, out of reach of children. Do not exceed stated dose unless under instruction from your health practitioner. Allergies/Intolerances:This product is manufactured in a facility that also handles allergy based materials such as nuts, seeds, milk, egg, cereals, soya, mustard, celery, fish, crustaceans and sulphites.
Suitable for both Vegetarians or Vegans.
xSpan Labs L-Glutamine 500mg 90 Capsules - High Quality Pure Amino Acid with no fillers or binders:
- each capsules contain 500mg of pure L-Glutamine
- helps to maintain healthy muscle glycogen stores after exercise
- helps maintain normal blood glucose and acid levels
xSpan Labs Guarantees High Quality L-Glutamine Capsules manufactured exclusively in the UK to GMP code of practice and ISO 9001, using only the finest quality raw materials in their highest grade and purest form so you receive a consistently high-quality product.
Our formulation is free from: ✘lactose, ✘gluten, ✘wheat, ✘salt, ✘dairy, ✘ artificial Preservatives, ✘Artificial Colours, ✘GMOs.
Suitable for Vegetarians and Vegans.


Reviews
I take l-glutamine immediately after exercise, as it's the most important amino acid involved in muscle recovery. There's nothing to criticise about this supplement. The manufacturer got everything right. Five stars.
The daily dose is from 1 to 6 capsules, so the 90 typical size capsules will last a few days or many. If you're a vegetarian or vegan, you may have a low level of L-glutamine, so this is good supplement
I know the capsules are L-Glutamine because, this amino acid wakes you up and if I take one before going to bed I cannot get to sleep.
No different, maybe they work for someone with mild symptoms
Prompt delivery. Good product at good price.