• Thorne NAC 500 mg bottle — N-acetyl cysteine capsules on white background
  • NAC bottle with benefit icons — antioxidant and recovery support
  • Supplement Facts for NAC 500 mg — ingredients and serving panel
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N-Acetyl Cysteine (NAC) | Antioxidant Support and Fatigue

Brand: Thorne

Count: 90 Count
$31.99
$31.99
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This product helps with

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  • Muscle Pain
  • Joint Pain
  • Brain Fog
  • General Fatigue
  • Immune Challenges
  • Oxidative Stress
  • Detox & Recovery Needs

Product Description

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N-Acetyl Cysteine (NAC) is a simple way to support antioxidant defenses and everyday recovery. NAC helps the body build glutathione, a key antioxidant that protects cells from daily oxidative stress.

Each capsule delivers 500 mg in a straightforward formula. It is unflavored and easy to take with a meal. The short ingredient list fits a clean, minimal routine. People choose NAC when they want dependable, everyday antioxidant support. Capsules are small and easy to swallow. No artificial colors.

  • Form: N-acetyl-L-cysteine (NAC)
  • Amount per capsule: 500 mg
  • Bottle size: 90 capsules
  • Supports: glutathione production, antioxidant defenses, everyday recovery
  • Free from: gluten, dairy, soy
  • Flavor: unflavored
  • Brand: Thorne

Keep a bottle at your desk or gym bag for consistent daily use. Pair NAC with sleep, hydration, and balanced nutrition for simple wellness support.

Disclaimer: This product is a dietary supplement. It is not intended to diagnose, treat, cure, or prevent any disease.

How it helps those with Long COVID

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Individuals suffering from long COVID often experience persistent symptoms such as fatigue, cognitive impairments, and respiratory issues. NAC has been studied for its potential benefits in reducing inflammation and oxidative stress, which are believed to contribute to these symptoms. By replenishing glutathione levels, NAC may help mitigate oxidative damage and support immune system balance. Additionally, research indicates that NAC supplementation could improve cognitive function and alleviate "brain fog" associated with long COVID.

Scientific Explanation

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N-Acetylcysteine is a derivative of the amino acid L-cysteine and serves as a precursor to glutathione, one of the body's most potent antioxidants. Glutathione plays a crucial role in neutralizing free radicals and maintaining redox balance within cells. In the context of long COVID, elevated oxidative stress and inflammation can deplete glutathione levels, exacerbating symptoms. Supplementation with NAC has been shown to restore intracellular glutathione concentrations, thereby reducing oxidative stress and modulating inflammatory responses. Clinical studies have demonstrated that NAC can decrease markers of inflammation, such as C-reactive protein (CRP) and D-dimer levels, potentially leading to improved outcomes in individuals with post-viral syndromes.

FAQs

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1) How do I take it?
Follow the label. Many adults take 1 capsule once or twice daily with water. Take with food if you’re sensitive to sulfur-like tastes/odors.

2) Can I combine it with other supplements?
Yes. NAC is commonly paired with vitamin C (supports glutathione recycling) and magnesium (muscle/nerve support) as part of a balanced routine. Some people also use alpha-lipoic acid (ALA) for additional redox support. If you take prescription medications or have specific health conditions, check with your clinician first.

3) Any safety notes?
Consult your clinician if you use nitroglycerin, have stomach ulcers, asthma, or are pregnant/nursing. Free from gluten, dairy, and soy.

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