Why You’ll Love It

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.

SKU: 790011070016

About This Brand

Jarrow Formulas

With so many supplement brands on the market, choosing what makes the cut for your wellness ritual can be a little overwhelming. The key is finding those that go above and beyond basic formulations to assure you get the most from your daily dose of vitamins and minerals. Jarrow Formulas is one such brand. For over 40 years, the premium supplement line has expertly crafted an extensive line of health-supporting essentials that are driven by research and scientific discovery and made with the best ingredients on the market. Every Jarrow Formulas
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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

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Disclaimer: Information, statements, and reviews regarding products have not been evaluated by the Food and Drug Administration. Results vary person to person, and there is no guarantee of specific results. Thrive Market assumes no liability for inaccuracies or misstatements about products.

California residents: learn more about Prop 65 warning.

Nutrition information

Serving Size:
1 Tablet
Servings Per
Amount per serving
% daily value
600 mg
† Daily Value Not Established

Warning: 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.

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Product Overview


Based on 10 ratings

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Mucus Thinner

Posted   by Jena from MINNEAPOLIS, Minnesota
Verified Purchase
This helps thin mucus like mucinex. Also is a precursor for Glutathione. Both help me get over a upper respiratory cold.
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Liver support

Posted   by david from TRACY, California
Verified Purchase
I started looking for supplements that support the liver when I had some bloodwork that showed a slightly fatty liver. Now I recommend this supplement to anyone fighting off a cold or chest congestion as it effectively helps clear your lungs. I gave my brother some when he was diagnosed with pneumonia and he said it did help. So far so good!
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Love this

Posted   by Caitlin from PEORIA, Arizona
Verified Purchase
I believe this really did make a difference. Great supplement.
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Posted   by Allison from Capulin, New Mexico
Verified Purchase
This is another worthless Jarrow product. I think they must just make one supplement and many labels! Bye-bye Jarrow! I wish I could say 'it's been nice knowing you'!
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We just seem to feel better

Posted   by Anonymous
We're always experimenting with various supplements & this is one that's made the transition to a daily routine along with curicumin & red yeast rice for me.
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Jarrow supplement.

Posted   by Anonymous
Jarrow has always been one of my favorite brands.
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Great price

Posted   by Sarah
This is the same stuff that I get at Whole Foods for almost half the price. I would highly recommend this product if you're already taking NAC.
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Posted   by Thrive
I have not only taken this myself when my sister had bronchitis for over a month I sent her the remaider of my bottle and had her take it. In three days her coughing and sputum cleared up. As an RN I recommend this to anyone suffering from a deep chest cold or bronchitis
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liver detox, anti hangover

Posted   by Jonmichael
I take this with vitamin C and ALA after a night of drinking and it does wonders.
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I love it!

Posted   by Rhonda
What can i say, I really love this product/and brand. Its really works I add vit.C and I feel a major difference. But I think you really need 2 give this product at least a month to really tell its working. But it does work. If your on the fence about this, I say go for it. Buy 2 months supply and u will not regret it.
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(Displaying 10 of 10 reviews)