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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)

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

Rated 4.1 out of 5
62 Reviews|17 Questions | 1,030 Answers|
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Gluten FreeSugar FreeDairy FreeSoy FreeTree Nut Free

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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.

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

Other Ingredients:

Gelatin (capsule), magnesium stearate, silica.

Does Not Contain:

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

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

  • 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.

    • 62 Ratings
    4.1out of 5 stars
    62 Ratings

    Rated 5 stars by 71% of reviewers

    Rated 4 stars by 3% of reviewers

    Rated 3 stars by 8% of reviewers

    Rated 2 stars by 0% of reviewers

    Rated 1 star by 18% of reviewers

    Would you recommend?
    1-10 of 62 Reviews
    Rated 5 out of 5
    Apr 3, 2026
    Good stuff
    Works like it should.
    John D
    Rated 5 out of 5
    Feb 28, 2026
    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 R
    Rated 1 out of 5
    Feb 7, 2026
    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
    Rated 1 out of 5
    Jan 13, 2026
    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 G
    Rated 5 out of 5
    Jan 1, 2026
    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
    Rated 3 out of 5
    Dec 29, 2025
    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
    Rated 5 out of 5
    Nov 19, 2025
    NAC works to combat viruses
    NAC works to combat viruses
    John L
    Rated 5 out of 5
    Oct 5, 2025
    Great Find!
    Excellent support with so many benefits!
    Susan V
    Rated 3 out of 5
    Oct 3, 2025
    Didn't notice any benefit
    Stopped taking
    Cora F
    Rated 1 out of 5
    Jun 17, 2025
    Not high quality
    The ingredients are a no for me
    undefined u
    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.

    We'll email them your question, then email you their replies.

    Have a question? Ask owners.Have a question about this? Ask people who own it.
    Start typing and see existing answers.
    17 Questions
    Why did you choose this?
    The Vitamin ShoppeStore

    It’s the only thing that cured my trichotillomania. This brand only. It keeps me from pulling my hair out.

    Mika P

    Good quality product.

    Vicky W

    Antioxidant

    VINCENT F

    The reviews were decent.

    SC 0
    Can I take nac that's been expired for a year? Will it be less effective?
    A shopper

    Best Answer:  No it will still be effective.

    Bart L
    Why does it have rotten egg smell?
    A shopper

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

    Daniel W.staff
    Is this vegan?
    A shopper

    Best Answer:  This is not a vegan supplement.

    Daniel W.staff
    Where is this manufactured? United States?
    A shopper

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

    Daniel W.staff
    which is best vitamin?
    A shopper

    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 L
    How and who test this product?
    A shopper

    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.staff
    Does this contain fish products?
    A shopper

    Best Answer:  No

    Natalia M
    What is shelf life if buying 200 capsules using one a day?
    A shopper

    Best Answer:  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 M
    Does this make you sleepy?
    Taryn H

    Best Answer:  No this does not contain any ingredients that will cause drowsiness

    Kevin V.staff
    Is it good for mucus?
    Edward U

    Best Answer:  Not really but it does boasts immunity

    John L
    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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