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NOW Foods

NOW Supplements, NAC (N-Acetyl Cysteine) 600 mg with Selenium, 100 Capsules

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Apr 17
Order within 3 hours and 49 minutes
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Size: 100 Count (Pack of 1)


Style: Supplements


Features

  • FREE RADICAL PROTECTION*: Take 1 NAC veggie capsule with selenium and molybdenum twice daily for free radical protection and to maintain cellular health*
  • IMPORTANT NOTE ABOUT THIS PRODUCT: Black spots may appear in NAC because of a normal oxidative reaction, but product is safe to consume. These spots are NOT mold or any other micro-contamination. Micro-testing has been performed to assess product safety
  • CERTIFICATIONS/CLASSIFICATIONS: Non-GMO, Vegan/Vegetarian, Made without Gluten, Kosher, Dairy Free, Egg Free, Nut Free, Soy Free, UL Certified
  • GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product formulation.
  • Packaged in the USA by a family owned and operated company since 1968

Description

Maintains Cellular Health With Selenium N-acetyl cysteine (NAC) is a stable form of the non-essential amino acid 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. Selenium is an essential trace mineral that facilitates the production of several important enzymes. Brand Story By NOW Foods

Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 2.25 x 2.25 x 4.38 inches; 3.53 ounces


Item model number ‏ : ‎ 0085


Date First Available ‏ : ‎ September 16, 2003


Manufacturer ‏ : ‎ NOW


Best Sellers Rank: #1,083 in Health & Household (See Top 100 in Health & Household) #17 in Amino Acid Nutritional Supplements #129 in Sales & Deals


#17 in Amino Acid Nutritional Supplements:


#129 in Sales & Deals:


Customer Reviews: 4.6 4.6 out of 5 stars (20,330)


Brand Name: NOW Foods


Primary Supplement Type: Selenium


Item Form: Capsule


Diet Type: Halal, Kosher


Product Benefits: Detoxing, Liver Health Support


Age Range Description: Adult


Container Type: Bottle


Dosage Form: Capsule


Model Name: NAC (N-Acetyl Cysteine) 600 mg with Selenium


UPC: 733739000859


Manufacturer: NOW


Global Trade Identification Number: 59


Manufacturer Part Number: 0085


Model Number: 0085


Unit Count: 100 Count


Item Weight: 0.1 Kilograms


Item Dimensions: 2.25 x 2.25 x 4.38 inches


Number of Items: 1


Total Servings Per Container: 100


Flavor: Unflavored


Special Ingredients: Amino Acid


Dose Release Method: Osmotic Release


Material Features: Vegetarian


Specific Uses For Product: Cellular Health


Allergen Information: Dairy Free, Egg Free, Non-GMO, Nut Free, Soy Free


Color: Off White


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Apr 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great product from a great brand
Size: 250 Count (Pack of 1) Style: Supplements
Review Image by Ellie D.
This is a great product from a great brand. There is no smell or taste, and the pills are super easy to swallow. They are effective at breaking up biofilms, and NAC is such a beneficial supplement. I also love the added selenium. The size of the bottle is great, and this brand never fails to impress me with quality and amazing prices. ... show more
Reviewed in the United States on February 10, 2026 by Ellie D.
    • Supercharge your liver and say "goodbye" to hangovers...
Size: 250 Count (Pack of 1) Style: Supplements
*Overview* In a few words, I can say that this supplement is the closest supplement I've ever used to a miracle product. Why do I say that? As a precursor to glutathione (Coined “The Mother of All Antioxidants” by Mark Hyman, MD), NAC serves to help my body overcome environmental and dietary toxins. In brief, I no longer feel "sluggish" like I once did or experience hangovers (even from minimal alcohol) like I once did. Since taking 1200-1800mg/day (2-3 capsules) in September of 2015, this has become a (long-awaited) staple in my supplement drawer and boost to my overall health. I am never without this product. *Dosage* I take, like I said, 2-3 capsules a day. First thing in the morning on an empty stomach with a large glass of water. Second one around lunchtime. Third one middle of the afternoon or so. If I plan on going out for a few drinks in the evening, I take another one before heading out the door to spend time with friends. I rarely miss doses but if I do, it is not as if my whole system crashes or I feel I have become so dependent on it I cannot function or am worse off than when I started. *What does it do?* If you're interested in the breakdown of what exactly this product is meant to do, I would recommend your own research or read some of the other reviews. I merely want to offer my own experience. I have taken a variety of supplements since I was a teenager (15+ years) and never really felt that most products lived up the hype or could back up their claims. As a former smoker, I stumbled across this product while researching "What products help mitigate lung damage from smoking" and found this on a random forum buried somewhere in the text. That's where I first encountered the name NAC. I was skeptical and more than a little nervous about taking it but was somewhat assured when I read this is used in hospitals for acetaminophen overdoses so, if used by the medical community, maybe there was something to it? The effect was initially subtle. I was bursting with energy or bouncing off walls but found certain things that used to be VERY hard for me started to lift. A few examples. I found myself picking up the phone more often and calling a friend where before I felt a dark lining on life that made it harder to be myself. I found myself breathing easier and experiencing less sinus pressure (which makes sense as this thins out mucus) which was hugely helpful as I am allergic to most everything and experience an overload. It didn't take all allergy symptoms away, but my need for anti-allergy meds has decreased. In fact, I can't remember the last time I bought a bottle of allegra. I found myself able to better focus in class and while I still experience a certain level of brain fog from time to time, clarity of thought is more the norm for me than the exception. This has corresponded to a lifting of a sense of depression and darkness making it easier to be myself in social situations (and move past the worst parts of social anxiety). Last, but certainly not least, I process alcohol WAY faster. I can't explain the effect but, like most adults, I have a drink from time to time. Like some adults, I have nights where I have more than one drink from time to time. Unlike most adults after a night of drinking, I don't have concerns for how I'll feel the next day. I can feel the effect even at the bar where I remain lucid and focused while drinking as opposed to becoming...sloppy? In the last year I've woken up with a headache once as opposed to formerly experiencing a headache after 1 beer. So...it seems to be doing something... Like I said, I cannot recommend this product enough and continue to share my experience with everyone I encounter. While I continue to experiment with other supplements, adding or removing items for specific things, NAC remains a baseline of health for me and will not go without. No, my hair has not fallen out (as another reviewer mentioned they experienced). No, this product will not allow you to drink like a monster without effect at all. Qualifiers aside, this product might help you and would be worth considering if you've tried everything out there (like me) and want a good baseline for health to continue to build upon. Best of luck in your search for better health! *edited 10/06/16 for clarity.* ... show more
Reviewed in the United States on July 4, 2016 by Kevin James
    • Good liver and immune support
Size: 250 Count (Pack of 1) Style: Supplements
Keeps me staying healthy and with my liver disease works well for me and my wife been taking it for years
Reviewed in the United States on February 24, 2026 by IN FULL EFFECT
    • Cant go wrong with this NAC
Size: 250 Count (Pack of 1) Style: Supplements
You can’t go wrong with items from NOW and these NAC supplements didn't disappoint — easy to swallow.
Reviewed in the United States on March 23, 2026 by Dr. Arias
    • Great price
Size: 250 Count (Pack of 1) Style: Supplements
Works as it should. Hurts stomach if empty
Reviewed in the United States on September 13, 2025 by Danica
    • Helpful for OCD
Size: 250 Count (Pack of 1) Style: Supplements
This supplement actually does help a lot with my obsessive invasive thoughts. It's not perfect, but it eases the symptoms
Reviewed in the United States on March 16, 2026 by katharsisJunkie
    • Does the job, includes selenium - smart move
Size: 100 Count (Pack of 1) Style: Supplements
Look, I'm not going to pretend NAC is some miracle supplement that changed my life overnight. Been taking this daily for about six weeks, and honestly? It just works. No drama, no fuss. The capsules go down easy, my stomach doesn't hate me for it, and here's the kicker - they threw in selenium. Why does that matter? Because NAC can actually deplete your selenium over time, and most people don't know that. So NOW Foods basically did your homework for you. That's the kind of attention to detail I appreciate. Fair warning: when you crack open the bottle, you'll get a whiff of that signature sulfur smell. It's not pleasant, but it's also not a deal-breaker. The capsules themselves don't taste like anything, so once you get past the initial "what died in here" moment, you're fine. Bottom line: if you're looking for a straightforward NAC supplement that doesn't require you to buy three other things to make it work properly, this is it. Good price, solid brand, does what it says on the tin. Skip it if you're expecting some kind of immediate transformation or if sulfur smells make you queasy. ... show more
Reviewed in the United States on December 15, 2025 by Nick Y.
    • IT HAS HELPED ME NOT BE SO TIRED ALL DAY
Size: 250 Count (Pack of 1) Style: Supplements
I am usually extremely tired during the day and I take several naps. I used Chat GPT to help me find out what is wrong with me and it suggested i take NAC supplement that also contained Selenium so it suggested this name brand. I have taken it only for two days and I have not felt tired or sleepy both days. I have gotten so much done in these past two days that I am in shock and awe at what one pill can do for a person. I will continue to take them as I do believe our foods have been so genetically modified that we are not getting the nutrients our bodies require. Supplementing is the only option other than going back to growing our own food. ... show more
Reviewed in the United States on March 20, 2026 by Jus Me!

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