L-Glutamine powder is a supplement designed to support gut health and muscle recovery, giving active people a reliable source of the body's most abundant amino acid. The star ingredient, L-glutamine, is the main fuel for gut lining cells, helping gut barriers and muscle metabolism when stressed. This commitment to pharma-grade purity comes via microbiological fermentation and strict allergen controls, underscoring the brand's tall standards.

Available Sizes & Variants:

1000 grams L-Glutamine powder - a long lasting supply for daily use.

Benefits & Features:

• Supports gut lining and intestinal health for daily resilience.
• Promotes muscle recovery by supplying the body's main amino acid, helping you train harder and bounce back quicker.
• Made using microbiological fermentation to ensure pharma-grade purity, with allergen-free and non-GMO checks for those with dietary restrictions, supporting safe daily use for long-term supplementation.
• Free from common allergens and extra fillers, so you get pure L-glutamine every time, quickly and easily.
• Supports immune function during demanding training, helping you recover faster and stay on track with your protein routine and daily activity.

Jarrow Formulas L-Glutamine Powder embodies the brand's long-standing commitment to purity and accessibility. The star ingredient, L-glutamine, is the main fuel for intestinal cells, supporting gut barrier function and muscle metabolism during stress. Produced by microbiological fermentation to pharma-grade purity, it is non-GMO and allergen-free, reflecting the company’s rigorous quality controls. Quality you can trust. Paired with a protein powder for muscle gain routine, it sits well beside the best collagen supplements.

L-Glutamine

• GTIN: 790011150350
• Manufacturer: Jarrow Formulas
• Categories: Best SellersGut Health SupplementsJarrow FormulasL-Glutamine Supplements, Powders & Tablets
• 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.

Take 1/2 teaspoon (2 g) of Jarrow Formulas L-Glutamine powder, mixed with water or your preferred beverage, up to twice daily, preferably before or after workouts for optimal muscle recovery. Store in a cool, dry place. Warning: Consult your healthcare professional before use if you are pregnant, nursing, taking medication, or have a medical condition.

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

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

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

L-Glutamine is an amino acid that plays a key role in everyday bodily functions and is the body’s richest amino acid. This product features a 100% pure, free-form L-glutamine powder and is produced via microbial fermentation, guaranteeing a pharmaceutical-grade standard.

This form is a free-form amino acid derived via fermentation and is suitable for people seeking a high-purity source of L-glutamine with allergen-free characteristics.

What Does L-Glutamine Do?

L-Glutamine acts as a main fuel for enterocytes, helping to support intestinal barrier integrity and cellular regeneration. It also participates in aiding muscle tissue synthesis and provides metabolic substrates that contribute to energy pathways during physical stress.

The nutrient supports immune system activity and overall metabolic processes tied to amino acid balance, lining up with general guidance on healthy gut and muscle function.

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

Jarrow Formulas has a solid, long-standing track record of delivering high‑purity amino acid supplements, so it feels like a natural fit for Welzo. Their commitment to microbiological fermentation and pharmaceutical‑grade purity fits with our standards for consistency and safety in core nutrients like L‑glutamine.

This brand is recognised for quality beyond basic formulation, with FDA‑approved standards and a range of quality certifications backing their manufacturing integrity. Their products are Non‑GMO and allergen‑free, underscoring a careful approach to formulation and consumer safety. Our evaluation also highlights their rigorous safety and integrity practices, which are validated through our quality certification process, ensuring trustworthy sourcing and production.

Welzo chose Jarrow Formulas for this L‑Glutamine powder because their heritage in precise amino acid sourcing, combined with verified manufacturing excellence, stands out among peers. Our expert team of doctors, nurses, and nutritionists our expert team of doctors, nurses, and nutritionists evaluated their credentials, while our quality assurance team our quality certification process confirms ongoing compliance. This partnership supports a product that is well‑suited to Welzo’s standards and customer needs.