L-Glutamine Powder UK – Pure Unflavoured Vegan 100g

One ingredient, nothing else. 100g of pure, unflavoured L-glutamine powder, fermented from glucose — so it is suitable for vegans, vegetarians, halal and kosher diets. No sweeteners, no flavourings, no fillers, no capsule shell.

Why Fermented From Glucose Matters

Amino acid powders are commonly produced from animal-derived or dairy-derived material. This L-glutamine is fermented from glucose instead, which is what makes it suitable for plant-based, halal and kosher diets — and it is worth checking on any amino acid product, because most brands don't state their source.

It is also genuinely unflavoured. There is no real taste, so it mixes into water, juice, a protein shake or food without changing it.

What L-Glutamine Actually Is

Amino acids are the building blocks of protein. There are twenty — twelve the body can make (non-essential) and eight that must come from the diet (essential). Glutamine is the most abundant free amino acid in muscle cells, and is traditionally classed as non-essential.

It is also described as "conditionally essential" after critical illness, stress and injury. The body's own glutamine levels can come under strain during periods of metabolic stress — injury, illness, and even severe emotional distress — which is when supplementation is typically considered.

The "L" stands for levo, meaning left. Many molecules exist in two mirror-image forms, like your left and right hands. Glutamine's mirror image is D-glutamine (dextro, right). L-glutamine is the form widely considered most useful, because it is more biologically active and performs more functions in the body. L-glutamine is synthesised from three other amino acids — ornithine, arginine and proline — and is a component of glutathione, a nutrient present in virtually every cell.

How Other UK L-Glutamine Powders Compare

MyProtein L-Glutamine — cheap, flavoured versions use sucralose. Competitively priced and Cologne List accredited, but the flavoured lines contain artificial sweeteners and colours, and there is no halal certification.

Bulk L-Glutamine — commodity powder. Serviceable at low cost, without halal or kosher approval and with no source statement.

Practitioner brands — good quality, premium price. Often excellent and sold through clinics at considerably higher cost per gram.

What's in the Pot

• L-glutamine powder — 100g · that is the entire ingredient list

Fermented from glucose. Unflavoured. Vegan. Vegetarian. Halal approved. Kosher approved.

Servings: between 7 and 20 per pot, depending on whether you take 5g or 15g per serving.

Every gram is: ✓ Pure L-glutamine, nothing added · ✓ Fermented from glucose · ✓ Unflavoured · ✓ Halal & kosher · ✓ Vegan · ✓ UK made

L-Glutamine Boost vs Other UK Options

Based on publicly available product information. Always verify current specs on manufacturer websites.

How to Take It

Take 5g (1 teaspoon) to 15g (3 teaspoons) per day, or as required or advised by a practitioner. Mix into water, juice, a protein shake, or stir into food — it dissolves quickly and has no real taste.

Many people take it alongside training. It also appears as an ingredient in BioSlim, our fibre powder. For complete protein alongside it, PeaPro provides 18.1g per serving.

Is This You?

• You want a single-ingredient amino acid powder with nothing added — no sweeteners, flavourings or fillers
• You need halal or kosher approved L-glutamine, or you're vegan and want the source stated
• You train hard and want to add glutamine to your existing protein shake
• You'd rather control your own dose between 5g and 15g than be fixed to a capsule size
• You've been advised to take it by a practitioner and want a clean unflavoured version

Explore the full Protein & Performance UK and Halal Vitamins UK collections.

Questions We Get Asked

Food supplements should not replace a varied diet or healthy lifestyle. Consult your GP before use if pregnant, breastfeeding, taking prescription medication, or managing a liver or diagnosed health condition.