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NAC N-Acetyl-L-Cysteine - Promotes Cellular Health, Immune & Antioxidant Support - 600 MG (200 Capsules)

NAC N-Acetyl-L-Cysteine - Promotes Cellular Health, Immune & Antioxidant Support - 600 MG (200 Capsules)

$34.99
($0.17/serving)

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NAC N-Acetyl-L-Cysteine - Promotes Cellular Health, Immune & Antioxidant Support - 600 MG (200 Capsules)

Rated 4.2 out of 5
79 Reviews|22 Questions | 1,067 Answers|
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      Gluten FreeSugar FreeDairy FreeSoy FreeTree Nut Free
      GET ADVICE FROM A HEALTH ENTHUSIAST
      $34.99
      ($0.17/serving)

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      • 600 MG
      • 200 Capsules$34.99
      • 50 Capsules$13.99
      • 100 Capsules$24.99
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      These products are dietary supplements and are not intended to diagnose, treat cure or prevent any disease. Reviews are not intended as a substitute for appropriate medical care or the advice of a physician or another medical professional. Actual results may vary among users. Vitaminshoppe.com makes no warranty or representation, expressed or implied, as to the accuracy or validity of the information contributed by outside product review submissions, and assumes no responsibility or liability regarding the use of such information. The information and statements regarding the dietary supplements have not been evaluated by the Food and Drug Administration. If you have a medical condition or disease, please talk to your health care provider. If you are currently taking a prescription medication, you should work with your health care provider before discontinuing any drug or altering any drug regimen, including augmenting your regimen with dietary supplements. Do not attempt to self-diagnose any disease or ailment based on the reviews and do not use the information contained herein for diagnosing or treating a health problem or disease. Proper medical care is critical to good health. If you have a health concern or suspect you have an undiagnosed sign or symptom, please consult a physician or health care practitioner. Online product reviews are a useful resource for, but The Vitamin Shoppe believes that customers who rely on those reviews should get a true and accurate picture of what other customers think. For that reason, we put procedures in place to ensure the reviews you see are real and honest. Additionally, we won't edit reviews to alter the message and we will always treat positive and negative reviews equally.
      ×
      These products are dietary supplements and are not intended to diagnose, treat cure or prevent any disease. Reviews are not intended as a substitute for appropriate medical care or the advice of a physician or another medical professional. Actual results may vary among users. Vitaminshoppe.com makes no warranty or representation, expressed or implied, as to the accuracy or validity of the information contributed by outside product review submissions, and assumes no responsibility or liability regarding the use of such information. The information and statements regarding the dietary supplements have not been evaluated by the Food and Drug Administration. If you have a medical condition or disease, please talk to your health care provider. If you are currently taking a prescription medication, you should work with your health care provider before discontinuing any drug or altering any drug regimen, including augmenting your regimen with dietary supplements. Do not attempt to self-diagnose any disease or ailment based on the reviews and do not use the information contained herein for diagnosing or treating a health problem or disease. Proper medical care is critical to good health. If you have a health concern or suspect you have an undiagnosed sign or symptom, please consult a physician or health care practitioner. Online product reviews are a useful resource for, but The Vitamin Shoppe believes that customers who rely on those reviews should get a true and accurate picture of what other customers think. For that reason, we put procedures in place to ensure the reviews you see are real and honest. Additionally, we won't edit reviews to alter the message and we will always treat positive and negative reviews equally.
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      NAC N-Acetyl-L-Cysteine - Promotes Cellular Health, Immune & Antioxidant Support - 600 MG (200 Capsules)
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      Product Info

      About This Product

      • Promotes cellular health
      • Offers immune and antioxidant support
      • Free of gluten, dairy, soy, nuts, sugar, salt, preservatives, and artificial colors or flavors

      NAC, or N-Acetyl-L-Cysteine, is a source of the essential amino acid L-cysteine—a precursor to the antioxidant glutathione. NAC is believed to help support cellular health and the immune system.

      These once-daily capsules are both convenient and easy to incorporate into your daily wellness routine.

      Read More

      Directions

      Take one (1) capsule daily, preferably with a meal.

      Warning

      Consult your healthcare provider prior to use if you are pregnant, nursing, taking any medication or have any medical conditions. Store in a cool, dry place. Keep out of reach of children. Tamper evident. Do not use if outer seal is broken or missing.

      Updated Jan 15, 2026
      Read More

      Supplement Facts

      Serving Size: 1 Capsule
      Number of Servings: 200 Servings
      Amount Per Serving
      % Daily Value
      N-Acetyl L-Cysteine   
      600 MG
      N/A*

      Other Ingredients:

      Gelatin (capsule), magnesium stearate, silica.

      Does Not Contain:

      Preservative Free, Free of Artificial Flavors, Free of Artificial Colors

      How Do You Read A Supplement Facts Label?

      Specifications

      Brand:
      The Vitamin Shoppe
      Form:
      Capsules
      Strength:
      600 MG
      Serving Size:
      1 Capsule
      Number of Servings:
      200 Servings
      Price per Serving:
      ($0.17 / serving)
      Product Weight:
      7  OZ
      Allergens:
      Soy Free, Tree Nut Free
      Specialty Diets:
      Gluten Free ,  Sugar Free ,  Dairy Free ,  Salt Free
      Item # :
      VS-1696 / 1735281

      Who Might Benefit From This Product

    • Health and Wellness Seekers: Those looking to promote cellular health and immune support may benefit from incorporating this NAC supplement into their routine, as it supports antioxidant activity.
    • Gluten-Sensitive Individuals: This product is suitable for individuals who need to avoid gluten, ensuring they can support their wellness goals without worrying about dietary restrictions.
    • Busy Professionals: Ideal for individuals with hectic lifestyles who need an easy and convenient way to enhance their immune health and general wellbeing.
    • Detoxers: This NAC supplement may assist those focused on detoxification, as it aids in glutathione production, a vital component of the body's natural detox process.
    • Older Adults: Older adults in search of ways to maintain cellular health and vitality might find this supplement beneficial, supporting their ongoing wellness and quality of life.
    • Read More

      Product Reviews
         (79)

      Disclaimer:

      Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of the Vitamin Shoppe. Vitamin Shoppe does not verify or endorse any claims made in these reviews.Please read the full product reviews disclaimer.

      79 Ratings
      4.2out of 5 stars
      79 Ratings

      Rated 5 stars by 72% of reviewers

      572%

      Rated 4 stars by 3% of reviewers

      43%

      Rated 3 stars by 9% of reviewers

      39%

      Rated 2 stars by 1% of reviewers

      21%

      Rated 1 star by 15% of reviewers

      115%
      1-10 of 79 Reviews
      • checkMost Recent
      • Most Helpful
      • Oldest
      • Highest Rated
      • Lowest Rated
      • (57)
      • (2)
      • (7)
      • (1)
      • (12)
      • Under 18 (0)
      • 18-24 (1)
      • 25-34 (2)
      • 35-44 (6)
      • 45-54 (14)
      • 55-64 (14)
      • 65+ (12)
      Customers talk about
      AI analysis found these key themes mentioned in reviews.
      Apr 3, 2026
      Rated 5 out of 5
      Good stuff
      Works like it should.
      John DVerified Purchaser
      Location
      CA, US
      Gender
      Male
      Age Range
      55-64
      Would you recommend?:Yes
      Purchased on Mar 19, 2026
      Was this helpful?
      Review by John D has been flagged
      Flag
      Feb 28, 2026
      Rated 5 out of 5
      Works well
      When taken with other sister supplements this seems to work well. I've been taking it for years and don't plan to stop. The capsule doesn't seem to upset my stomach like some do either.
      Stacia RVerified Purchaser
      Location
      Aurora, CO, US
      Gender
      Female
      Age Range
      45-54
      Would you recommend?:Yes
      Purchased on Nov 1, 2024
      Was this helpful?
      Review by Stacia R has been flagged
      Flag
      Feb 7, 2026
      Rated 1 out of 5
      VShoppe Expiration Bad Practice
      Vitamin Shoppe, what's going on? You keep sending me expired NAC and try to cover it up with ghetto stickers that show a newly printed expiration date. This is just bad practice.
      Jonathan U
      Would you recommend?:No
      Was this helpful?
      Review by Jonathan U has been flagged
      Flag
      Jan 13, 2026
      Rated 1 out of 5
      Original Expiration Dates COVERED OVER with NEW STICKERS and NEW DATES
      It MIGHT BE A GOOD PRODUCT, but Vitamin Shoppe sent me EXPIRED BOTTLES, WITH STICKERS COVERING OVER THE ACTUAL EXPIRATION DATES. The stickers had NEW EXPIRATION DATES, that JUST HAPPENED TO BE EXACTLY 1 YEAR AFTER THE REAL EXPIRATION DATES THAT WERE STAMPED ON THE BOTTLES. How do you think that happened?
      Frank GVerified Purchaser
      Location
      Boston, MA, US
      Gender
      Male
      Age Range
      35-44
      Would you recommend?:No
      Purchased on Dec 10, 2025
      Was this helpful?
      Review by Frank G has been flagged
      Flag
      Jan 1, 2026
      Rated 2 out of 5
      Please post all reviews
      I left my review on the 200 count NAC - it never got posted - it won't allow me to leave another there as it states I already left a review - yet someone that left a shining review after mine got posted. Sad really sad. Pointless
      THERESA H
      Location
      CA, US
      Gender
      Female
      Age Range
      65+
      Was this helpful?
      Review by THERESA H has been flagged
      Flag
      Jan 1, 2026
      Rated 5 out of 5
      Bad reviewers got it wrong!
      For the reviewers complaining about the smell...it's SUPPOSED to smell!!! A sulfur or rotten egg smell. They aren't expired or rotten. If they don't smell, than you're not getting cysteine, you're getting cystine. Not the same.
      Salvador D
      Location
      Las Vegas, NV, US
      Gender
      Male
      Age Range
      55-64
      Would you recommend?:Yes
      Was this helpful?
      Review by Salvador D has been flagged
      Flag
      Dec 29, 2025
      Rated 3 out of 5
      Expiration dates not always accurate
      It's good when the expiration date is good
      I believe it gets foul smelling when it's old - like oxidation.
      For some reason lately noticed labels with a year or 2 are added to modify the expiration date on the bottom of the bottles. I know I sure wouldn't want that to happen with my prescription meds - wouldn't want it done on anything I ingest. I only try and purchase those without a modified date.
      THERESA H
      Location
      CA, US
      Was this helpful?
      Review by THERESA H has been flagged
      Flag
      Nov 19, 2025
      Rated 5 out of 5
      NAC works to combat viruses
      NAC works to combat viruses
      John LVerified Purchaser
      Location
      Farmingdale, NY, NY, US
      Gender
      Male
      Age Range
      45-54
      Would you recommend?:Yes
      Purchased on May 2, 2025
      Was this helpful?
      Review by John L has been flagged
      Flag
      Oct 5, 2025
      Rated 5 out of 5
      Great Find!
      Excellent support with so many benefits!
      Susan V
      Location
      RI, US
      Gender
      Female
      Age Range
      65+
      Would you recommend?:Yes
      Was this helpful?
      Review by Susan V has been flagged
      Flag
      Oct 3, 2025
      Rated 3 out of 5
      Didn't notice any benefit
      Stopped taking
      Cora FVerified Purchaser
      Location
      Kansas City, MO, US
      Gender
      Female
      Age Range
      65+
      Would you recommend?:No
      Purchased on Oct 30, 2023
      Was this helpful?
      Review by Cora F has been flagged
      Flag
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      Disclaimer:

      Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of the Vitamin Shoppe. Vitamin Shoppe does not verify or endorse any claims made in these reviews.Please read the full product reviews disclaimer.

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      17 Questions
      Most Recent Question
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      Oldest Answer
      Why did you choose this?
      The Vitamin ShoppeStore

      Take nac for the natural decongestant effect.

      Reatha MAug 16, 2026

      Normally used

      Patricia AAug 13, 2026

      doctor recommended .

      Samuel AAug 10, 2026

      Recommended by my otolaryngologist.

      Rayna TJul 28, 2026
      Can I take nac that's been expired for a year? Will it be less effective?
      A shopperOct 20, 2016

      Best Answer:  No it will still be effective.

      Bart LOct 20, 2016purchased Jan 28, 2014
      Reply
      Inaccurate
      Answer by Bart L has been flagged
      Why does it have rotten egg smell?
      A shopperNov 18, 2022

        Yes, this product does have a strong natural sulfur smell.

      Daniel W.staffNov 18, 2022
      Reply
      Inaccurate
      Answer by Daniel W. has been flagged

        The smell does not bother me one bit. I used to have problems with smells opening up the bottle each day. NOW- At the beginning of the month, I make AM & PM ‘pill packs’ for my supplements. I think airing out some of the supplement ingredients help dissipate smells (not sure about that), but I don’t have problems with ACV or fish oil supplements this way either.

      STACY BSep 23, 2023
      Reply
      Inaccurate
      Answer by STACY B has been flagged

      Vote for the best answer above!

      Is this vegan?
      A shopperOct 29, 2023

      Best Answer:  This is not a vegan supplement.

      Daniel W.staffOct 31, 2023
      Reply
      Inaccurate
      Answer by Daniel W. has been flagged
      Where is this manufactured? United States?
      A shopperJun 11, 2022

      Best Answer:  Yes, this item is manufactured in the USA.

      Daniel W.staffJun 14, 2022
      Reply
      Inaccurate
      Answer by Daniel W. has been flagged
      which is best vitamin?
      A shopperOct 20, 2016

      Best Answer:  First, one must distinguish between micronutrients and macronutrients, and within the realm of micronutrients, some are vitamins, some are not. There is no useful answer to that question. I recommend Wikipedia for a better understanding of the term :"vitamins". NAC is considered to be a precursor for glutathione, and glutathione is a substance your own body can produce that acts as an anti-oxidant and thereby acts as an anti-inflammatory agent. I take it in very large amounts daily, almost at the level of micronutrients.

      F. Frank LOct 20, 2016purchased Apr 11, 2013
      Reply
      Inaccurate
      Answer by F. Frank L has been flagged
      How and who test this product?
      A shopperMar 8, 2023

      Best Answer:  The Vitamin Shoppe is very diligent about testing each lot of all of our raw materials for identity, purity, strength, composition, and contaminants before they can be used in the manufacturing of a Vitamin Shoppe brand supplement. Finished products are also tested at random by FDA audited, independent third-party laboratories to ensure that label claims are being met. Our manufacturers adhere to current good manufacturing practices (cGMP) and perform quality control checks throughout the entire manufacturing process.

      Daniel W.staffMar 8, 2023
      Reply
      Inaccurate
      Answer by Daniel W. has been flagged
      Does this contain fish products?
      A shopperJan 25, 2022

      Best Answer:  No

      Natalia MMar 19, 2022purchased Apr 28, 2019
      Reply
      Inaccurate
      Answer by Natalia M has been flagged
      What is shelf life if buying 200 capsules using one a day?
      A shopperJun 23, 2013

        The usable shelf life is years, so 200 days will be no problem. Over time, you may notice a whiff of vinegar. That is just NAC breaking down into its components, L-cysteine and acetic acid. Aspirin does the same thing, breaking down into acetic acid and salicylic acid.

      Jerry MJun 23, 2013
      Reply
      Inaccurate
      Answer by Jerry M has been flagged

      Please help me JERRY M. .... Can I take mine if they expired on May 2013 ... I completely forgot I had them and need them for hair pulling and Sjogrens. I hope I can still take them.

      v m.Jul 29, 2013
      Reply

        I assume if you keep it in a cool, dry place, the bottle will last up until the expiration date of the bottle. I bought mine in 2012 and the expiration date is Oct 2014. I am a pharmacist.

      Sonya LJun 23, 2013
      Reply
      Inaccurate
      Answer by Sonya L has been flagged

        Please help me JERRY M. .... Can I take mine if they expired on May 2013 ... I completely forgot I had them and need them for hair pulling and Sjogrens. I hope I can still take them.

      v m.Jul 29, 2013
      Reply
      Inaccurate
      Answer by v m. has been flagged

        You're good. I bought this product Apr 2013 and it out dates March 2015.

      Denise VJun 23, 2013
      Reply
      Inaccurate
      Answer by Denise V has been flagged

        look at the expiration date on the bottle. they last at least a year.

      Dina KJun 24, 2013
      Reply
      Inaccurate
      Answer by Dina K has been flagged

        I use one per day so 200 capsules lasts 200 days.

      Jill GJun 23, 2013
      Reply
      Inaccurate
      Answer by Jill G has been flagged

      Vote for the best answer above!

      Does this make you sleepy?
      Taryn HFeb 28, 2026

        No this does not contain any ingredients that will cause drowsiness

      Kevin V.staffMar 10, 2026
      Reply
      Inaccurate
      Answer by Kevin V. has been flagged

        No, I take it first thing in the morning... It does not make you drowsy.

      John DApr 3, 2026purchased Mar 19, 2026
      Reply
      Inaccurate
      Answer by John D has been flagged

      Vote for the best answer above!

      Is it good for mucus?
      Edward UNov 13, 2025

        Yes!

      Salvador DJan 1, 2026
      Reply
      Inaccurate
      Answer by Salvador D has been flagged

        Not really but it does boasts immunity

      John LNov 19, 2025purchased May 2, 2025
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      Answer by John L has been flagged

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      Experts Break it Down


      5 Groups of People Who Could Benefit From More Amino Acids

      5 Groups of People Who Could Benefit From More Amino Acids

      Just like some folks can benefit from including more calcium or omega-3s in their diets, certain groups of people can reap better health by ramping up amino acids. Read on to discover if you’re one of the many people who could use more aminos in your life.

      Which Pump-Boosting Amino Acid Is Better: L-Arginine Or L-Citrulline?

      Which Pump-Boosting Amino Acid Is Better: L-Arginine Or L-Citrulline?

      When it comes to fitness-boosting amino acids, BCAAs seem to get all of the attention. However, two other amino acids deserve some spotlight, too: l-arginine and l-citrulline. Here’s what you need to know about their unique benefits—and which to incorporate into your workout routine.

      5 Amino Acids All Gym Lovers Should Know About

      5 Amino Acids All Gym Lovers Should Know About

      Whether you’re considering adding an amino acid supplement to your fitness routine, don’t know much about the one you’re already taking, or just want to understand the magic that happens inside your muscles—we’ve got all the amino info you need.

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