N-A-C Sustain® 600 mg | GNC
Note: This product cannot be sold in Canada

Product Information



Bilayer Tablets Quick + Sustained Releases
N-Acetyl-L-Cysteine Sustain®
Antioxidant and Glutathione Precursor*
Supports Liver and Lung Function*
NAC Sustain® is a special Sustain™ bilayer Quick Release/Sustained Release format of N-Acetyl L-Cysteine (NAC), a powerful antioxidant amino acid and a precursor in the body to the critical endogenous 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 Rellease 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.


Nutrition Facts
Serving Size  1 Tablet(s)
Servings Per Container  100

Amount Per Serving     % DV

N-Acetyl L-Cysteine  600 mg   **

** Daily Value (DV) not established.
Other Ingredients
Carbomer, Calcium Phosphate, Cellulose, Magnesium Stearate (Vegetable Source), silicon dioxide, Beet Root Powder (for color), Aqueous Coating
Label (click image to enlarge)

How To Use

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.
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., Keep out of reach of children.
Store in a cool, dry place, or at room temperature and away from light.
Jarrow Formulas®
P.O. Box 35994
Los Angeles, CA 90035-4317


5.0 / 5.0
1 Review
5 Stars
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1 Star
Best NAC I have taken
After a few days taking it regularly, it brings a very steady support throughout the day,
Best supplement of any type in the (sustain release) form, I have ever taken.
And, the best NAC I have ever taken, in any form (it may take a fews days until it brings you its best).
September 12, 2018
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