N-Acetyl-L-Cysteine from Life Extension supports immune and respiratory health by boosting glutathione levels. Life Extension is known for GMP production and rigorous testing, making this NAC supplement a trusted daily choice.

Available Sizes & Variants:

60 capsules – convenient monthly supply of NAC for daily antioxidant support

Benefits & Features:

• Supports immune defence by replenishing glutathione, your body's chief antioxidant.
• Helps respiratory health by aiding mucus clearance and lowering oxidative stress in the airways.
• Supports liver health by acting as a precursor to glutathione, helping detoxification processes.
• A daily 600 mg dose delivers steady antioxidant protection.
• Regular use can help reinforce your body's antioxidant capacity, potentially supporting immune defence and cellular protection against everyday oxidative stress arising from busy modern living, helping you feel steadier day to day.

Life Extension has a long heritage of science led supplementation, keeping ingredients pure and potent. NAC, also known as n acetylcysteine, is valued for its role in supporting glutathione production, your body's master antioxidant. The product is non GMO and manufactured under GMP guidelines with routine testing to verify identity and potency, ensuring a reliable daily antioxidant ally for everyday wellness. This product sits well in a wellness routine - well, basically, it can sit alongside a vitamin d supplement and probiotics.

N-acetyl-L-cysteine 600 mg, vegetable cellulose (capsule), vegetable stearate, silica.

• GTIN: 737870154365
• Manufacturer: Life Extension
• Categories: Best SellersLife ExtensionLung & Respiratory SupplementsN-Acetyl Cysteine (NAC) SupplementsSports Supplements Black Friday SaleSubscribe & Save Products
• 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 (1) capsule one to three times daily, or as recommended by a healthcare practitioner. Store tightly closed in a cool, dry place. KEEP OUT OF REACH OF CHILDREN. DO NOT EXCEED RECOMMENDED DOSE. Do not purchase if outer seal is broken or damaged. When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

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

The Active Ingredient Is: N-acetyl-L-cysteine

N-acetyl-L-cysteine, a derivative of the amino acid cysteine, is a compound used as a supplement and acts as a precursor to glutathione, a key intracellular antioxidant.

This form is provided as the active ingredient in this product and supports antioxidant protection and cellular defence through its role in glutathione synthesis.

What Does N-acetyl-L-cysteine Do?

N-acetyl-L-cysteine helps maintain glutathione levels, which supports normal immune function, respiratory health, and liver protection as part of normal physiological processes.

EFSA notes that glutathione is involved in protecting cells from oxidative stress, and NAC is recognised for its role in replenishing glutathione to support antioxidant capacity.

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

Welzo chosen Life Extension for NAC because this brand blends a long‑standing reputation in reliable manufacture with a clear pledge to ingredient purity and potency. Life Extension’s stance on GMP‑compliant production and regular third‑party inspections supports our baseline for safe, dependable supplements, while their declared emphasis on ingredient quality aligns with our own quality expectations. our team of medical experts evaluated Life Extension for compatibility with our thorough supplier criteria, notably around manufacturing controls and transparency, and found a solid match with our standards. our quality assurance criteria underline their rigorous testing and quality programmes, reinforcing overall confidence in this partnership.

This brand’s NAC product is well placed for the intended use, with a focus on reliable potency and non-GMO sourcing, making Life Extension a top option among suppliers. The partnership also mirrors our UK regulatory alignment and local market know‑how, ensuring solid oversight and ongoing support for customers looking for NAC.