Reduced L-Glutathione is a gentle, hypoallergenic supplement that backs your antioxidant defences, helping you manage oxidative stress and feel steadier day to day. The star ingredient is the reduced form of glutathione, the body’s master antioxidant, delivered in a clean, careful formulation. Quality you can trust. Backed by Kirkman’s enduring quality standards and strict manufacturing controls, you can trust the product daily.

Available Sizes & Variants:

100 Capsules - Convenient daily maintenance for balanced antioxidant support.

Benefits & Features:

• Antioxidant support helps shield cells from oxidative stress.
• May support immune function as part of a balanced daily routine.
• The star ingredient is the reduced form of glutathione for cellular support.
• Manufactured in Kirkman’s United States facilities under strict quality systems with independent third party testing.
• Comprehensive quality assurance and control programmes back every batch for purity, safety, and consistent potency.

From the start, Kirkman has built a reputation for rigorous quality, producing in its own United States facilities under strict manufacturing standards with good manufacturing practice accreditation and National Sanitation Foundation certification. Each batch undergoes strict quality assurance and quality control and is tested for purity, identity, and contaminants through third party labs. The hypoallergenic formula focuses on purity and gentle support, with glutathione as the star ingredient, helping your daily wellness routine. Some customers pair it with a vitamin d supplement for broader coverage.

Di-Calcium Phosphate, Setria® L-Glutathione (Reduced Form), Magnesium Stearate (Vegetable), Silicon Dioxide, Plant Cellulose Capsule.

• GTIN: 812325020485
• Manufacturer: Kirkman Laboratories
• Categories: GlutathioneHypoallergenic Makeup ProductsKirkmanNew 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.

Take one capsule daily or as advised. Take 1 to 2 capsules daily.

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

The Active Ingredient Is: L-Glutathione (Reduced Form)

L-Glutathione in its reduced form is a tiny tripeptide molecule that acts as a crucial intracellular antioxidant, helping to keep cellular health and redox balance.

This hypoallergenic formulation delivers the reduced form of glutathione in a purer, low-allergen presentation, staying in line with Kirkman’s standard of careful ingredient validation.

What Does L-Glutathione Do?

Dr. Richie at European University reported that everyday glutathione supplementation may support antioxidant reserves and natural detox processes, contributing to normal cellular function. EFSA-aligned reasoning supports the role of glutathione in maintaining cellular redox status and immune function in healthy individuals.

It helps protect cells from oxidative stress and aids with detoxification pathways, contributing to normal metabolism and immune health as part of a balanced daily life.

Compliance disclaimer: This product is not intended to diagnose, treat, cure, or prevent any disease.

Kirkman Laboratories was chosen for its manufacturing excellence and strict quality control, ensuring the production of a hypoallergenic reduced L-Glutathione product you can trust. The brand operates in cGMP and NSF-certified facilities in the United States, with QA/QC teams able to pause production or reject materials to safeguard quality. This foundation mirrors our commitment to consistent, safety‑focused manufacturing standards that fit Welzo’s expectations for purity and potency.

This brand’s focus on third‑party validation is embodied in its policy of using Certificates of Analysis and broad batch testing, with a strong focus on contaminant screening. Our experts evaluated Kirkman against definite criteria for reliability, traceability, and transparent processes, confirming a solid alignment with our ingredient quality and purity standards. The product’s hypoallergenic formulation also helps the needs of sensitive users, and Kirkman’s controlled environment supports reliable delivery of the active ingredient.

Evaluated by our expert team of doctors, nurses, and nutritionists and chosen for its strong manufacturing ethos, Kirkman is well placed for the UK market, where consistency, safety, and clear quality assurances are paramount.