One-time purchase:
$18.99 ($0.08 / capsule)
Subscribe & Save: Save 5%
$18.03 ($0.07 / capsule)
Other Sellers on Amazon
Add to Cart
$18.98 ($0.08 / capsule)
& FREE Shipping on orders over $35.00. Details
Sold by: Amazon.com
Add to Cart
$19.45 ($0.08 / capsule)
& FREE Shipping on orders over $35.00. Details
Sold by: iHealthTree Store
Add to Cart
$19.49 ($0.08 / capsule)
+ Free Shipping
Sold by: Greenals

Image Unavailable

Image not available for
Color:
  • NOW Foods Nac-Acetyl Cysteine 600mg, 250 Vcaps
  • Sorry, this item is not available in
  • Image not available
  • To view this video download Flash Player
      

NOW Foods Nac-Acetyl Cysteine 600mg, 250 Vcaps

| 15 answered questions

List Price: $39.99
Price: $18.99 ($0.08 / capsule) & FREE Shipping on orders over $35. Details
You Save: $21.00 (53%)
In Stock.
Sold by XSNonline and Fulfilled by Amazon. Gift-wrap available.
250
  • Critical Antioxidant
  • With Selenium & Molybdenum
  • Maintains Cellular Health

Pay as low as $16.13 ($0.06 / capsule) and never run out with Subscribe & Save.
Save 5% when you subscribe to regular deliveries of this item. Save 15% on your entire delivery when you subscribe to 5 or more items that arrive in the same month. No commitments, no obligations, and shipping is FREE. Learn more
37 new from $16.79

Frequently Bought Together

NOW Foods Nac-Acetyl Cysteine 600mg, 250 Vcaps + NOW Foods Alpha Lipoic Acid 250mg, 120 Vcaps
Price for both: $35.19

Buy the selected items together


Important Information

Legal Disclaimer
Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Product Description

Size: 250

N-Acetyl Cysteine (NAC) is a stable form of the non-essential amino acid L-Cysteine.  It is a sulfur-containing amino acid that acts as a stabilizer for the formation of protein structures, and is also necessary for the formation of Glutathione.  Molybdenum and Selenium are essential trace minerals that facilitate the production of several important enzymes.*

Product Details

Size: 250
  • Product Dimensions: 6 x 5 x 4 inches ; 6.4 ounces
  • Shipping Weight: 8 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • Origin: Made in USA
  • ASIN: B0013OUQ3S
  • UPC: 885182973997 885123031793 733739000866
  • California residents: Click here for Proposition 65 warning.
  • Item model number: 86
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (224 customer reviews)
  • Amazon Best Sellers Rank: #401 in Health & Personal Care (See Top 100 in Health & Personal Care)
  •  Would you like to give feedback on images?



Customer Questions & Answers

Customer Reviews

No side effects for me.
P.M.
Recommended to me by many doctors because of my fibromyalgia.
Michal Olszewski
NAC helps reduce anxiety and quell urges to pick at hair.
Elbert B. Jean

Most Helpful Customer Reviews

93 of 99 people found the following review helpful By Brigitte F. Tolson on December 19, 2013
Size Name: 250
A friend with depression told me NAC worked wonders for her depression, so initially I ordered some thinking it may be a good mood elevator. It sad in my cabinet, and I'd take it inconsistently with no real noticeable effects.

Flash forward a couple months, I hear about glutathione as an amazing anti aging supplement from my dermatologist (glutathione is an essential part of every cell in the human body, it's considered the "ultimate antioxidant": [...] and upon doing research on the best way to encourage glutathione...my friend NAC kept popping up again. Time to take this stuff properly (I take 3 a day) and consistently.

Bare in mind, I have tried virtually every vitamin, herb, amino acid, you name it. After a brush with health problems last year, I have become a bit of a wellness junkie: and from adding martial arts, acupuncture, vitamins, research, juicing, and all that good stuff, I can tell you no supplement or food, absolutely NOTHING has improved my overall health more than NAC. I truly feel younger, I get deeper sleep, I get out of bed after 7-8 hours feeling rested (I used to need about 9-10). I maintain a healthy weight more easily, my skin is better, I feel happier, I no longer get sick, I feel more clear-headed. It has truly made an impact in my life similar to adding in a workout routine really, it's absolutely incredible. I suspect that increased glutathione was a key part of feeling much better. My thyroid is also functioning better according to lab tests, and I can feel it as well.
4 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
80 of 87 people found the following review helpful By Elder Statesman Doctor on January 16, 2014
Size Name: 250 Verified Purchase
I'm a physician, and I use one of these on any day I take either Tylenol or a motrin like product.

This same compound is used in an IV form in the ER to protect your liver from damage from an overdose of Tylenol, and it is used in at least some hospitals before during and after Cardiac Catheterizations to protect the kidneys from damage from the iodine dye used for visualizing the blood flow in the coronary arteries.
7 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
Size Name: 250 Verified Purchase
To test this supplement I conducted an experiment on myself. Over the course of a month I had my girlfriend lay out my pills and write down which days included NAC and which days did not. I did not look at my pills when I took them and did not know which days I was taking NAC. I then recorded my anxiety and stress levels each day. At the end of the month there was a noticeable difference in my ratings of anxiety between days that I did and did not take NAC.

I therefore believe that, for me personally, this supplement appears to be effective. JUST MAKE SURE TO NOT TAKE IT AT LEAST 2 DAYS A WEEK! The reasoning behind this is that NAC increases your body's glutathione levels. But if your levels are chronically elevated, your body may begin to decrease glutathione levels in order to keep them at a consistent level (this is called homeostasis). Therefore (as with all antioxidant supplements) you want to stop taking it at least 2 days a week so your body does not decrease glutathione production.
3 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
50 of 53 people found the following review helpful By Douglas Chappee on February 23, 2013
Size Name: 250 Verified Purchase
I have pulmonary fibrosis. My pulmonologisit suggested using these. It definitely helps. I would recommend anyone with lung problems and congestion to take this product.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
91 of 107 people found the following review helpful By mudbone on July 8, 2013
Size Name: 250 Verified Purchase
I originally purchased NAC to counter act an unwanted symptom I was getting after taking Methyl B12. After taking Methyl B12 for about a week I began to notice that it was making me very irritable at times to the point of verbally lashing out at people for no real good reason. I researched this side affect online and found an article that explained why it was happening. It said that the agitation was related to low levels of glutathione in the nerve cells of the brain and that it was caused by the Methyl B12. They recommended taking NAC to counter act this side affect so I tried it and it did help the problem. I won't stop taking Methyl B12 because my father died from pernicious anemia and it is genetic. I also noticed that this product gave me a lot more energy than I had which was a definite plus. This stuff works.

Update July 24, 2013 - I really, really, really like this stuff and totally recommend NAC. I noticed a huge burst of energy after I started taking NAC but I didn't realize how much until I stopped taking it so I started taking it again. I also was only taking one capsule a day. If you are having any problems with fatigue this product will definitely help.

Update August 9, 2013 - I recommended this product to a co-worker that has bipolar disease as well as her daughter. She told me that this stuff really improved there condition and helped them focus. I have noticed that my co-worker has been much happier at work. I never heard of NAC until I did some research on a Methyl B12 side affect but this stuff is fantastic.
6 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
65 of 79 people found the following review helpful By Old Codger on July 18, 2013
Size Name: 250 Verified Purchase
I am in my late 70s and am troubled with Parkinson and things like constipation, bad blood circulation, etc. Read a great book called "Toxic Relief" by Dr. Don Colbert and this was highly recommended by him. Since I have been taking it, my nerves are steadying and the constipation problems have disappeared. Am also having better blood circulation in my legs. I also believe that I am having fewer memory and cognitive problems. I know that my overall physical health and well being is definitely in better shape. I highly recommend this for many health problems, especially for older folks.
6 Comments Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again

Customer Images

Search

Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.