l glutamine dietary supplement offers targeted support for gut health and immune function, helping you keep gut comfort and resilience day after day. The main active ingredient, l glutamine, acts as the main fuel for intestinal cells and immune cells, supporting tissue repair and barrier integrity. Douglas Laboratories sits within Nestlé Health Science, recognised for professional grade supplements and strict quality standards.

Available Sizes & Variants:

60 capsules - handy daily support for gut and immune health

Benefits & Features:

• Supports day-to-day gut health and immune function.
• l glutamine fuels intestinal mucosal cells and immune cells, helping sustain the gut barrier and support mucosal regeneration during times of physiological stress illness or recovery.
• Designed for daily use with pharmaceutical grade purity.
• Professional grade origin and simple inactive ingredients ensure a clean supplement with no yeast, gluten, dairy, or artificial flavours.
• Trusted by clinicians for gut and immune support.

Douglas Laboratories sits within Nestlé Health Science, a hallmark of clinical grade nutrition. This l glutamine supplement uses USP grade crystalline l glutamine and is thoughtfully designed with simple inactive ingredients, keeping purity at the forefront. The brand's heritage in amino acid science informs careful sourcing and rigorous quality control, ensuring reliable daily support you can trust in clinic or at home. Some customers pair l glutamine with a protein powder for muscle gain to support overall wellness.

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.

The supplement is commonly used to enhance athletic performance and improve muscle growth. It is also frequently taken to support weight loss and increase energy levels. Furthermore, it is utilized to boost the immune system and promote overall health and well-being. Additionally, the supplement is often used to address specific health conditions and deficiencies, such as anemia and vitamin deficiencies. Finally, it is frequently taken as a preventative measure against certain diseases and to maintain optimal health.

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

1. Boosts Immunity: L-Glutamine is an essential amino acid that supports the immune system by enhancing the production of white blood cells, which are responsible for fighting off infections and diseases. By taking 500mg of L-Glutamine daily, you can strengthen your body's defense against illnesses.
2. Supports Muscle Growth and Repair: L-Glutamine is often referred to as the "building block" for muscles, as it plays a crucial role in protein synthesis. By supplementing with 500mg of L-Glutamine, you can promote muscle growth and repair, making it an ideal supplement for athletes, bodybuilders, and individuals looking to improve their overall physical performance.

The Active Ingredient Is: L-Glutamine (L-Glutamine)

L-Glutamine is an amino acid that acts as a key nutrient in the body and is supplied here as crystalline L-glutamine. It’s the most abundant amino acid in blood and functions as a main fuel source for certain cells and tissues.

This formulation gives pure crystalline L-glutamine suitable for use as a dietary amino acid supplement, with inactive ingredients including a gelatin capsule, cellulose and vegetable stearate. It is designed to support gastrointestinal health and immune function through its role as a fundamental building block and energy source for relevant tissues.

What Does L-Glutamine Do?

L-glutamine helps provide nitrogen and energy to rapidly dividing intestinal mucosal cells, supporting mucosal regeneration and barrier integrity. It also plays a part in supplying energy to immune cells within the gut and related tissues, contributing to normal gut and immune function.

Additionally, glutamine supports normal amino acid production and may help maintain acid-base balance as part of broader metabolic processes. This information lines up with established nutrient function concepts for amino acids in gut and immune health.

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

Douglas Laboratories is our chosen partner for L-Glutamine because of the brand’s steadfast commitment to quality from the ground up. As a Nestlé Health Science brand, it operates within an ecosystem known for professional-grade supplements that are distributed through licensed healthcare professionals, underscoring a heritage rooted in clinical trust and market standing. This alignment with healthcare channels reinforces the brand's credibility and long-standing reputation for the exacting product standards.

The brand keeps a plain focus on purity and performance, delivering pharmaceutical-grade L-glutamine with USP grade specification, and prioritising inactive ingredients that stress clean formulations. This emphasis supports our need for solid manufacturing standards and traceable quality, a standard we check via our supplement quality standards.

Douglas Laboratories’ product design aligns with the supplement type, providing the main fuel for intestinal cells and immune function as described in the research into the product. Our screening process, led by our expert team of doctors, nurses, and nutritionists, ensures the brand and product meet our criteria for safety, consistency, and reliability. In short, this brand shines for heritage, purity, and professional acceptance as our trusted partner for this L-Glutamine.