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Source Naturals, N-Acetyl Cysteine, 1000 mg, 120 Tablets

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$21.99 (50)
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In Stock
  • Expiration Date: Jun 2020
  • Shipping Weight: 0.59 lbs (0.27 kg)
  • Product Code: SNS-00170
  • UPC Code: 021078001706
  • Package Quantity: 120 Tablets
  • Dimensions: 2.6 x 2.6 x 4.6 in, 0.5 lbs (0.23 kg)
Product Overview


  • Dietary Supplement
  • Antioxidant Support

N-Acetyl cysteine is a stable form of the sulfur amino acid L-cysteine, and is a powerful antioxidant. It is also a precursor of glutathione, a major antioxidant. Glutathione is activated by the selenium-containing glutathione peroxidase, one of the most important antioxidant enzymes in the body. N-Acetyl cysteine is better than glutathione supplements, which may break down during digestion and lose potency.

Suggested Use

1 to 2 tablets daily.

Other Ingredients

Dibasic calcium phosphate, stearic acid, modified cellulose gum, colloidal silicon dioxide, and magnesium stearate.

Hypoallergenic: Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.


Keep tightly closed in a cool, dry place.

Do not use if you are taking any form of prescription nitrate such as nitroglycerin. If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.

Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving %DV
Calories 5  
Calcium 58 mg 6%
N-Acetyl Cysteine 1 g
†Daily Value not established.
iHerb Customer Reviews

Great way to take this versatile antioxidant

Posted by 4858160469540672929 on Jan 05, 2017

NAC is a well tolerated antioxidant that is gaining recognition as a useful supplement for a range of symptoms. Source naturals is a reliable product

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N-Acetyl Cysteine

Posted by 5417454266669516768 on Dec 28, 2016

I have found NAC to be an excellent supplement and I'm sure my liver and heart thank me.

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Posted by 5092092589296495966 on Dec 01, 2016

I haven't been using long enough to tell what it is doing. My doctor insisted that I take this. I suppose he knows best so I will continue to take it, I will order more when I finish this bottle.

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Posted by 4652114262566062819 on Oct 03, 2016

I have been using this product now for 8 months, after my doctor suggested taking this with my anti-depressants. I feel so much better.

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too large

Posted by 5560351778809882609 on Jul 05, 2016

Very difficult to swallow - even after breaking it in half.

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