L-Glutamine Powder – Pure Amino Acid for Gut & Muscle Support | UK
£23.99
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£23.99
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L-Glutamine Powder – Pure Amino Acid for Gut & Muscle Support | UK
Pure unflavoured L-Glutamine powder — for gut lining and muscle recovery, made in the UK.
- 100% pure L-Glutamine amino acid — no fillers, sweeteners or flavourings
- Supports gut lining integrity — a foundation pairing with probiotics
- Aids post-exercise muscle recovery and helps maintain lean mass
- UK-manufactured in GMP-certified facilities
- 60-day money-back guarantee — even if the bottle's half empty
Estimated UK Delivery:
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What's working inside
- Gut lining support — Pure L-Glutamine, the most abundant amino acid in the body, traditionally used to support the integrity of the gut lining.
- Muscle recovery — Supports post-exercise recovery and helps maintain lean muscle during demanding training.
- Pure amino acid foundation — No fillers, no sweeteners, no flavourings — just clean L-Glutamine you can mix into anything.
The Science of Gut & Recovery Support
Pure amino acid for gut and recovery support.
Hard training and modern life both place a heavy demand on your body — especially your muscles and your digestive system. When those systems are under pressure, recovery and everyday wellbeing can start to suffer.
L-Glutamine is one of the most abundant amino acids in the body, naturally used by both the gut and muscle tissue. We wanted a glutamine that does one thing well: no sweeteners, no fillers and no unnecessary extras. Just pure amino acid you can add to any drink or shake to support your body when your routine is demanding.
Targeted Support Matrix
Glutamine plays a natural role in supporting the cells that line your digestive tract and is also used by muscles during and after exercise. This 100% pure, unflavoured powder is designed to support:
- Gut Lining Integrity: Helps maintain digestive comfort and a healthy gut barrier.
- Muscle Recovery: Replenishes depleted amino acid stores after intense exercise.
- Immune System Function: Provides vital fuel for immune cells during periods of physical stress.
- Clean Nutrition: No fillers, sweeteners, or additives. Just pure amino acid powder, nothing else.
*Please see the product images for the full nutritional label.
How to Use
Mix 5g (one scoop) with water, juice or your protein shake.
Active Tip: Use once or twice daily. Because it is unflavoured, it mixes seamlessly into other drinks. Many people take it after training for muscle recovery, or first thing in the morning on an empty stomach for targeted gut support.
Backed by Science & Quality
Glutamine is the most abundant free amino acid in the human body, serving as a critical fuel source for immune cells and the intestines. Explore the clinical data:
- Gut Barrier Function: Studies indicate that Glutamine is a key energy source for intestinal cells, helping to maintain the integrity of the gut lining and prevent permeability ("leaky gut").
- Muscle Recovery: Research has shown that L-Glutamine supplementation can result in faster recovery of peak torque and reduced muscle soreness following eccentric exercise.
- Immune Support: During heavy training, plasma glutamine levels can drop. Supplementation helps provide necessary fuel for immune cells (lymphocytes and macrophages) to function correctly.
The Health Improvers Difference:
- Quality assured: UK manufactured to GMP standards.
- Purpose-led: 100% pure with no unnecessary additives.
- Risk-free: Covered by our 60-day money-back guarantee.
Delivery & Returns
Fast, Free UK Delivery
- Free Standard Delivery: All orders are shipped completely free of charge using Royal Mail Tracked 48, so you can follow your package to your door.
- Flexible Options: Need it faster? Additional expedited shipping options are available at checkout.
- Efficient Dispatch: To ensure you get your order as quickly as possible, some inventory is managed and shipped directly by our trusted fulfillment partners.
For full details, view our Shipping Policy.
Our 60-Day "Gut & Recovery" Guarantee
We stand behind our formulas. That is why we offer a completely risk-free 60-day return policy. You have 60 full days after receiving your item to request a return.
If you take L-Glutamine Powder consistently and don't feel a noticeable difference in your digestive comfort or post-training recovery, simply contact us. We will arrange a hassle-free return and a full refund. View our Refund Policy for full terms.
How does this compare to other UK probiotics?
L-Glutamine pairs naturally with probiotics for gut lining support. We compared Optibac, Bio-Kult, Symprove and our own range in an honest 2026 buyer's guide. Read the full UK probiotics comparison →
Meet the Ingredients
Every ingredient chosen for a reason. No fillers. No mystery.
Your Wellness Journey
From where you are now, to where you want to be — with consistent support.
Where you are now
Stubborn gut issues. Or training hard and wanting cleaner recovery. You want something that works without fillers or hype.
Mix into water or smoothies
5g scoop in water, juice or your smoothie. Unflavoured — disappears into anything you're already drinking.
Feel the foundation work
Less digestive irritation, faster recovery between training sessions, steadier daily energy.
Daily foundation
L-Glutamine works as a daily foundation. Reorder before you run out and keep the gut and muscles supported.
Before you Buy
The questions we hear most — answered straight.
How does L-Glutamine support gut health?
L-Glutamine is the primary fuel source for the cells lining your small intestine (enterocytes). It helps maintain the "tight junctions" of the intestinal wall, which is essential for preventing leaky gut and supporting overall digestive integrity.
Can it help with bloating or IBS?
Many users find that L-Glutamine helps soothe the digestive tract and reduce inflammation. By supporting the gut lining, it can help minimise the discomfort associated with food sensitivities and bloating.
Why do athletes take L-Glutamine?
During intense training, your body’s glutamine levels are depleted faster than they can be replenished. Supplementing helps prevent muscle breakdown (catabolism) and supports faster recovery, allowing you to train more frequently.
Should I take this before or after my workout?
It is most effective when taken immediately after your workout to assist with muscle repair. However, for gut health, many people prefer taking it on an empty stomach first thing in the morning.
Is this a pure powder or are there additives?
Our L-Glutamine is 100% pure pharmaceutical-grade powder. It contains no fillers, no artificial flavours, and no sweeteners.
What does it taste like?
It is virtually tasteless and odourless. This makes it incredibly easy to mix into your protein shake, juice, or even just a glass of water without changing the flavour.
Is this product vegan-friendly?
Yes, our L-Glutamine is 100% vegan and suitable for both vegetarians and vegans.
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