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N-A-C Sustain®
Antioxidant and Glutathione Precursor*
Supports Liver and Lung Function*

N-A-C Sustain
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  • Optimized Release N-Acetyl-L-Cysteine Tablets
  • SUSTAIN™ Bilayer Release Technology
    • 1/3 quick, 2/3 sustained release
  • 9,000+ References on PubMed
    • Detoxification, oxidative stress protection*
  • Patented Formula: US 6,623,754


NAC Sustain® is in a special Sustain™ bilayer Quick Release/Sustained Release format of N-Acetyl-L-Cysteine (NAC),  a powerful antioxidant amino acid and a precursor to the critical antioxidant glutathione.* Glutathione exerts a variety of protective effects, including detoxification and intracellular defense against oxidative stress.* Substances known to reduce glutathione status are acetaminophen and alcohol.*


The advanced bilayer Sustain™ tablets combine 1/3 Quick Release and 2/3 Sustained Release formats to both immediately raise and maintain blood levels over a longer period of time.* NAC Sustain® releases in the small intestine over an 8 hour period, compared to the 1.5 hour biological half-life of NAC in the bloodstream.* Protected by U.S. Patent # 6,623,754.


Keep out of the reach of children.


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Suggested Usage

Take 1 tablet 1 to 2 times per day, preferably on an empty stomach with fruit juice or as directed by your qualified healthcare professional.  

NOTE: Prolonged or elevated intake may alter liver function tests without affecting actual liver function. Inform your physician that you are ingesting NAC if you undergo liver function tests. If you have a medical condition, are pregnant, lactating, trying to conceive, under the age of 18, or taking medications, consult your healthcare professional before using this product.

Other Ingredients

Carbomer, cellulose, calcium phosphate, beet root powder (for color), stearic acid (vegetable source), magnesium stearate (vegetable source), silicon dioxide and an aqueous-based coating. 

No wheat, no gluten, no soybeans, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts.

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Reformulation Date:
Design Change Date: 10/17/2013
Last Update: 06/24/2016
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Serving: 600 mg Product Number: 107001
Size: 100 SUSTAIN™ Tablets Product Code: SUS
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