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Jarrow Formulas, N-Acetyl-L-Cysteine, 500 mg, 200 Capsules

By Jarrow Formulas

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In Stock
  • Product Code: JRW-07003
  • UPC Code: 790011070030
  • Package Quantity: 200 Capsules
  • Dimensions: 2.5 x 2.5 x 5 in, 0.4 lbs (0.18 kg)
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Product Overview

  • N-Acetyl-L-Cysteine
  • Precursor to Glutathione
  • Supports Liver & Lung Function
  • Dietary Supplement

N-Acetyl-L-Cysteine (NAC) is a powerful antioxidant amino acid and a precursor in the body 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.

Suggested Use

Take 1 capsule 1 or 2 times per day or as directed by your qualified healthcare professional.

Other Ingredients

Cellulose, magnesium stearate (vegetable source) and silicon dioxide. Capsule consists of gelatin.

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


Store in a cool, dry place, or at room temperature, and away from light.

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, or taking medications, consult your healthcare professional before using this product.

Keep out of the reach of children.

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Supplement Facts
Serving Size: 1 Capsule
Serving Per Container: 200
Amount Per Capsule % DV
N-Acetyl-L-Cysteine 500 mg *
* Daily value not established.

iHerb Customer Reviews

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Good but can be better as well!

Posted by Supplementsdiy on Nov 17, 2013

NAC is known to boost glutathione, one of the most powerful antioxidant produced naturally by the body. NAC is one of the best and cheaper way to boost glutathione as taking glutathione does not work when taken orally since it is too big to pas s through intestine wall. Other than trying to boost your antioxidants level in various parts of the body individually, boosting glutathione is simply easier and better as it can easily cros s to various parts of the body and recharges other antioxidants as compared to antioxidants that can only work in specific area. Glutathione also support and boost your immune system, protects our cells from damage from environmental toxic and eliminate carcinogens. Our glutathione declines naturally as we age so the importance of taking NAC gets more important as well. As for the price, it is quite cheap considering that you are getting 200 vcaps. As for the recommended dosage, 2 caps are reasonable (lasting over 3 months!). More can be taken if needed without being too expensive. The caps are made of gelatin (not for vegetarian), not too big and easy to swallow. The product does contain magnesium stearate. Whether there is any health effects from magnesium stearate like claimed, it is highly debateable. Check out my page for more reviews!

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9 people found the following review helpful

Most Cost Effective Qource Of Quality N-A-C

Posted by Reviewer1016912 on Dec 22, 2008

High quality with the best price per gram. This works like magic to clear chest mucous congestion. Take on an empty stomach. It thins out or reduces mucus viscosity so that it can be cough up and cleared from the chest and throat. Take in the morning and mid day to allow clearing of congestion from flu or colds. Do not take it at night because it will allow mucous to flow constantly and in a stepping position this will cause constant coughing.

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7 people found the following review helpful

So glad my Dr recommended!!! ♥♥♥ Click on my username for more reviews!

Posted by gettingwell on Jul 10, 2013

I use this with b12 (methylcobalamin) and folate (not folic acid!). The combination of all three provide the same nutrients as Cerefolin NAC 5mg which helps with early memory loss, although mine has been going on for quite a while due to mold exposure.

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5 people found the following review helpful

Jarrow Formulas NAC

Posted by Reviewer2458990 on Jun 14, 2009

Aside from being exceptional value for money Jarrow Formulas NAC is of great help in relieving a very distressing symptom of my ALS, the build up of thick mucus in the throat, greatly diminished since starting NAC. Excellent service from iHerb also!

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4 people found the following review helpful

NAc for colds

Posted by Reviewer2265092 on Jan 23, 2008

Although NAC was recommended as a detoxifier, I use it when a cold gets into my chest and it keeps it from getting serious. It seems to break up congestion. Along with Larix, it keeps the colds away.

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4 people found the following review helpful

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