L-Glutamine Powder is a single-ingredient amino acid supplement that supports gut health and muscle recovery, helping you feel steadier and more resilient, backed by Klaire Labs' allergen-conscious, pure formulations. The key active ingredient, l glutamine, fuels gut cells and supports muscle recovery, while Klaire Labs' allergen-conscious, additive-free approach keeps purity at the forefront. Designed for daily use, it's vegan, non-GMO and free from major allergens, aligning with modern wellness routines.

Available Sizes & Variants:

351g L-Glutamine Powder - roughly 60 servings per container

Benefits & Features:

• Supports gut health and gut barrier integrity.
• The key active ingredient, l glutamine, powers intestinal cells for steadier digestion.
• A daily scoop helps with muscle recovery after workouts, supporting protein synthesis and reducing muscle breakdown, which makes it a thoughtful addition to a fitness routine.
• Completely vegan and free from major allergens.
• Designed to fit daily routines, it pairs with protein powder for muscle gain and digestive probiotics.

Crafted by Klaire Labs, this L-Glutamine Powder focuses on purity. The formula is vegan, non-GMO and free from major allergens, with no artificial flavours, colours or preservatives. Each scoop delivers five grams of pure glutamine, the primary energy source for intestinal cells and a key supporter of immune function and muscle recovery. The powder is produced with rigorous allergen controls and a commitment to quality, aligning with trusted manufacturing standards. It's a straightforward addition to daily gut health routines, alongside digestive probiotics and protein powder for muscle gain.

100% L-Glutamine.

• GTIN: 709616012451
• Manufacturer: Klaire Labs
• Categories: Glutamine SupplementsGut Health SupplementsKlaire LabsNew ArrivalsPopular Supplement Brands
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Mix one scoop daily with water, juice, or food, or use as directed by a healthcare professional. Initial use: press the pump 3 times to get the liquid flowing.

Shake well before every use. Carefully spray into your mouth\, ideally onto the inside of your cheek\, and hold for a few seconds.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: L-Glutamine (Free-Form Amino Acid)

L-Glutamine is a non-essential amino acid that acts as a key nutrient for different bodily functions and tissue support. This product offers L-glutamine in a free-form form suitable for everyday use as a single-ingredient supplement.

This formulation is vegan and free from major allergens, highlighting a pure, single-ingredient source of L-glutamine with minimal added components to support routine energy and resilience.

What Does L-Glutamine Do?

L-glutamine is involved in providing energy to intestinal cells and supporting immune cell function, contributing to normal gut and immune system activity. It also helps with muscle recovery by supporting protein synthesis and tissue maintenance, as recognised in nutrient function discussions.

Aligned with EFSA and NHS-informed guidelines for nutrient roles, L-glutamine helps maintain mucosal integrity and overall cellular function, helping everyday vitality and resilience.

This product is not meant to diagnose, treat, cure, or prevent any disease.

We chose Klaire Labs as our partner for L-Glutamine Powder because of the brand’s well established reputation for allergen-conscious, pure formulations and a thoughtful manufacturing philosophy. Klaire Labs is recognised in the industry for making supplements with a strong focus on avoiding cross‑contamination and artificial additives, which aligns with our commitment to safety and integrity. Their approach to quality shows through industry‑standard quality assurance practices and the absence of major allergens and artificial ingredients in their L‑glutamine powder, produced for SFI Health, reflecting a trusted manufacturing ethos.

Product‑specific, Klaire Labs provides a single‑ingredient, free‑form L‑glutamine at a standard daily dose, with transparent composition and vegan, non‑GMO attributes that support daily resilience and gut‑related considerations as shown in our research into the product. This combination of robust brand quality and a clean, well‑matched product makes Klaire Labs a natural fit for Welzo customers seeking purity and reliability. Our trust is reinforced by how we evaluate ingredient quality and safety, via our expert team of doctors, nurses, and nutritionists and the how we verify ingredient quality framework.

For a deeper look at our team deliberations, check out our expert team of doctors, nurses, and nutritionists.