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NAC (N-Acetyl-L-Cysteine) - BOGO

  • Active ‘L’ form of N-Acetyl-Cysteine (NAC) in a Free Form
  • Key component of glutathione formation
  • Supports healthy liver, lungs, immune system & detoxification
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Life Changing

My functional nutritionist recommended this supplement for me, as he takes it himself. I noticed almost an immediate difference in my mood and energy levels. I consistently hear the benefits of NAC across health professionals with new substantial evidence arising. ~Emmy R.

Your cells are constantly under attack. Free radicals and oxidative stress from environmental toxins can significantly burden your liver.

Even normal processes like hormone metabolism contribute to toxicity. In our modern world, maintaining healthy antioxidant status and detoxification pathways is essential for your health.

NAC by Seeking Health provides 500 mg of N-acetyl-L-cysteine per vegan capsule.

NAC (N-acetylcysteine) is an important sulfur-containing amino acid. By facilitating glutathione production, NAC supports healthy detoxification and antioxidant function in virtually every cell of the human body. NAC also has the unique ability to support the normal break up of mucus in the lungs, making it popular for lung and immune health protocols.

NAC acts directly and indirectly as an antioxidant. Its unique chemical structure contains an outer sulfur group. This allows NAC to act as an antioxidant, particularly for NO2 and hydroxyl radicals.

NAC is also a bioavailable source of cysteine. This rate-limiting amino acid is needed to build glutathione, which acts as your body’s master antioxidant.

Your liver requires glutathione for multiple functions. Glutathione can readily donate electrons to act as a potent antioxidant. It also binds toxins, drugs, and hormones so your body can excrete them. The World Health Organization (WHO) recognizes NAC as a substance that supports liver cell health, especially with exposure to compounds known to cause liver damage.

It is well known that cells (particularly immune, lung, reproductive, and brain cells) function optimally when glutathione levels are in peak range. However, glutathione levels decline naturally with age. They are depleted even faster when the body does not have enough cysteine.

NAC by Seeking Health supports healthy glutathione levels by providing a bioavailable source of cysteine.

Use of NAC can also support lung and respiratory health. It has been well established that NAC supports the normal thinning of lung mucus. It does this by interfering with the disulfide protein bonds found in mucus. This allows mucus to be more easily expelled from the lungs.

NAC supports healthy:

  • Lung tissue
  • Respiratory function
  • Glutathione production
  • Antioxidant status
  • Immune health
  • Hormone balance
  • Liver health
  • Detoxification
  • Oxidative damage defenses
  • Brain & Nerve health
  • Reproduction & Fertility
  • Healthy aging processes

In most supplement forms found on the market, glutathione may not be as well-absorbed or utilized as NAC. Supplementing with high-quality liposomal glutathione may not be an option for everyone due to the increased cost and strong sulfur taste. NAC is a cost-efficient way to support natural glutathione and antioxidant activity in your body.

NAC by Seeking Health supports healthy glutathione production, detoxification, respiratory health, and much more. Always keep a bottle in your immune toolbox–this popular product tends to fly off the shelves!

Key Ingredients

NAC Vitamins

  • NAC (N-Acetyl-L-Cysteine) A sulfur-containing amino acid compound that is a precursor to glutathione, giving it powerful antioxidant and detoxification properties. NAC also has the unique ability to support the normal breakup of mucus in the lungs.

Suggested Use

Take 1 capsule daily with food and 8 oz of water or as directed by your healthcare professional. Capsule may be opened and contents mixed into juice or applesauce.


Children and pregnant, lactating, or breastfeeding women should consult their healthcare practitioner prior to use. Do not use if tamper seal is damaged. If you are experiencing acetaminophen poisoning or acetaminophen overdose, seek medical care immediately.

What our customers say

Real reviews from real customers.

Rated 4.9 out of 5 stars
Based on 353 reviews
Total 5 star reviews: 335 Total 4 star reviews: 15 Total 3 star reviews: 2 Total 2 star reviews: 1 Total 1 star reviews: 0
98%would recommend these products
353 reviews
  • CT
    Cynthia T.
    Verified Buyer
    NAC (N-Acetyl-L-Cysteine) - BOGO
    NAC (N-Acetyl-L-Cysteine) - BOGO
    I recommend this product
    Rated 5 out of 5 stars
    6 days ago

    This offer was great, especially when trying out a product that you haven't used or are familiar with.

  • L
    Verified Buyer
    NAC (N-Acetyl-L-Cysteine) - BOGO
    NAC (N-Acetyl-L-Cysteine) - BOGO
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Great for immune support!

    I love always keeping this on hand to support my immune system throughout the year!

  • R
    Verified Reviewer
    NAC (N-Acetyl-L-Cysteine) - BOGO
    NAC (N-Acetyl-L-Cysteine) - BOGO
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Loved this

    Worked great, super fast shipping, quality supplement I can trust!

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