Now Foods NAC is a dietary supplement that supports antioxidant defence by boosting glutathione levels, helping protect cells from oxidative stress and support healthy liver, respiratory, and immune function. This sits with NOW Foods' long standing commitment to quality, transparency and GMP standards. For decades, NOW Foods has built trust with third-party testing and USA production.

Available Sizes & Variants:

120 tablets - convenient daily supply for ongoing NAC supplementation.

Benefits & Features:

• Boosts glutathione for stronger antioxidant defence.
• Supports cellular resilience by acting as a direct precursor to glutathione, helping protect cells from oxidative stress, support immune function, and maintain healthy liver and respiratory system function.
• Vegetarian capsules align with dietary preferences while GMP-certified quality ensures purity.
• NOW Foods has a long standing reputation for transparency and third-party testing.
• Produced in GMP-certified facilities in the USA with globally sourced ingredients.

NOW Foods has been a trusted family business since 1968, built on quality controls and transparent sourcing. n acetylcysteine acts as a direct precursor to glutathione, delivering a potent antioxidant boost that helps protect cells and support liver and respiratory health. The tablets are produced in GMP-certified facilities in the USA with globally sourced ingredients, reflecting NOW Foods’ commitment to purity and everyday wellbeing. Each tablet delivers 1,000 mg NAC as part of a comprehensive liver health supplements range.

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.

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

The Active Ingredient Is: N-Acetylcysteine (NAC)

N-Acetylcysteine, a stable, bioavailable form of the amino acid cysteine, supports antioxidant defences by increasing glutathione levels.

This form is a direct precursor to glutathione synthesis and is involved in protecting cells from oxidative stress, while supporting healthy liver, respiratory and immune function.

What Does N-Acetylcysteine Do?

N-Acetylcysteine participates in boosting cellular glutathione, contributing to the body’s master antioxidant system and supporting normal immune and cellular function.

It is involved in detoxification processes and helps maintain normal lung function and inflammatory responses as part of its role in supporting antioxidant capacity.

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

NOW Foods is Welzo’s chosen partner for this NAC supplement because the brand aligns with our rigorous partner criteria and long-standing commitment to transparency and quality. This brand’s heritage as a family-owned company since 1968 reinforces its credibility and stable industry presence, making NOW Foods a trusted supplier in the global supplement space. Their reputation for GMP-certified manufacturing, third-party testing, and USA-based quality control underpins the reliability we require for a core antioxidant support product. our medical team evaluates NOW Foods against our high standards for safety and efficacy, while the how we verify ingredient quality framework confirms consistent, quality-driven practices across sourcing and production. This brand’s sourcing transparency and commitment to purity—delivering NAC from a facility that prioritises global ingredient integrity—made NOW Foods stand out over competitors. For this product, NOW Foods’ proven quality processes and product fit for antioxidant support perfectly match Welzo’s selection criteria and product strategy.