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N-acetylcysteine 500mg

(5 customer reviews)


  • Promote healthy lung function
  • Raise our bodies’ antioxidant levels
  • Promote & maintain heart health
  • Support memory functions
  • Promote liver health & healthy liver functions


An amino acid supplement to support immune system function and lung health.*N-Acetyl Cysteine (NAC) is a non-essential, free-form amino acid that is a highly stable form of cysteine. NAC has antioxidant properties and is necessary for the production of glutathione.* NAC helps to support healthy lung tissue and the body’s natural defenses including cellular health.*

Among the best-researched amino acids is a form of cysteine, called n-acetylcysteine (often referred to as NAC). NAC is a more stable and bioavailable form of cysteine. NAC was first developed as a therapeutic for its ability to break up mucus in the lungs in conditions like bronchitis. However, research into NAC’s other amazing benefits soon gained momentum. This was largely due to NAC’s ability to raise glutathione levels in the body, which is significant because glutathione is one of our body’s most important antioxidants. In recent years it has become apparent that NAC has great potential not only for raising our bodies antioxidant levels, but also for preventing heart disease, memory loss, cancer, and even aging itself.

Acetylcysteine converts to cysteine within the cell, acting as a precursor to glutathione and contributing to its regeneration. Unfortunately, cysteine is found in small amounts in the diet and much of this is in the form of cystine, which is less effective. Because of this it seemed logical that NAC would generate interest as an anticancer agent due to its ability to increase protective glutathione, and this has been shown to be true in many studies. However, NAC’s most striking first role as an antioxidant was as an antidote to acetaminophen overdose. Acetaminophen is the common over-the-counter pain reliever that can cause severe liver damage in high doses, and NAC continues to be the best antidote to prevent this damage.

Over many decades of research, however, NAC has grown from an antioxidant to a remarkable compound with many potential benefits. Much of this is very recent research, and scientific interest in NAC only continues to grow. Many of us are concerned with mercury in our diets, and NAC has shown the ability to remove mercury from the body.1 Because of NAC’s initial use for lung congestion, researchers began investigating NAC as a protective antioxidant in smokers, and many studies have shown this to be true.2 NAC is being investigated in clinical trials to see if it prevents cancer in smokers.

Also, NAC has been proven to improve impaired blood flow in smokers.3 But NAC’s heart benefits don’t end there, as NAC has been shown to increase nitric oxide production and lower homocysteine levels in humans.4,5 NAC even helps prevent damage from oxidized LDL cholesterol, especially when combined with green tea.6 This triple-action benefit of NAC on heart risk factors makes it very attractive as an addition to other cardiovascular health supplements.

NAC has also shown the ability to improve immune function and retard aging, especially in aging animals.7 Other studies have shown that aged animals can have dramatic improvements in immune function after NAC supplementation.8 And among the most exciting recent research are indications that NAC may be of benefit both for preventing and treating Alzheimer’s disease, due to its ability to lower the toxicity and production of beta-Amyloid protein (a suspected cause).9,10

Other research has shown NAC to be particularly effective at preventing damage from light within the eye 11, and studies are underway to evaluate NAC as a treatment for age-related vision loss. As if this list weren’t impressive already, NAC has shown the ability to help prevent the damage that comes with aging to mitochondria, our cells’ energy factories. 12 This, along with NAC’s ability to prevent the toxicity of advanced glycation end-products (damaging molecules formed from glucose in the body) shows NAC to be a multi-faceted antioxidant protector with true anti-aging potential.13

NAC even prevents the toxic actions of homocysteine, which is implicated in brain and cardiovascular aging. 14, and prevents the damage caused by acrylamide, the carcinogen recently found in fried foods.15 With such an impressive list of attributes, NAC surely is at the top of the list of worthwhile supplements. Even scientists have commented that since NAC has a long history of human use and extremely low toxicity, it deserves more attention for its potential health benefits.

Supplementing with NAC provides us not only a source of the important amino acid cysteine, but provides it in a stable form that has plenty of research-proven benefits. Give your dietary supplement program a big antioxidant boost with the amazing amino acid acetylcysteine . The grim reaper will hate you for it.

Supplement Facts

Supplement Facts
90 Vegetarian Capsules

Each capsule contains:
N-Acetyl Cysteine . . . . . . 500 mg

Other ingredients: vegetable cellulose, rice flour, vegetable stearate

5 reviews for N-acetylcysteine 500mg

  1. Lala

    My father is starting this product

  2. Noticeable difference


    My husband seems to be coughing less since starting this product

  3. Great product!


    Great product!

  4. NAC


    I my husband is now on his 4th month of NAC and his coughing is greatly reduced. No ill side effects!! Newly diagnosed with IPF.

  5. Using NAC for 2 years

    James Nason

    I have been using NAC and the other 3 products in the Pulmonary Fibrosis bundle for 2 years. These supplement products and my Dr. prescribed CellCept treatment have slowed and then stopped the progress of my PF.

    Thank you for fast delivery and excellent support.

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