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N-Acetyl-L-Cysteine 600 mg

N-Acetyl-L-Cysteine 600 mg vegetarian capsules, provided by Douglas Laboratories®, contain 600 mg pure N-Acetyl- L-Cysteine for respiratory health and detoxification support.

Original price was: $30.60.Current price is: $26.01.

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N-Acetyl-L-Cysteine 600 mg

N-Acetyl-L-Cysteine 600 mg vegetarian capsules, provided by Douglas Laboratories®, contain 500 mg pure N-Acetyl- L-Cysteine. N-Acetyl-L-Cysteine (NAC) is a cellular antioxidant support that specifically promotes healthy lung tissue. NAC is a free radical scavenger that supports glutathione levels in tissue.


N-Acetyl-L-Cysteine (NAC) is a derivative of the dietary amino acid L-cysteine. NAC has a high affinity for lung tissue, which it supports through mucolytic and antioxidant action. Due to its sulfur content, NAC is able to disrupt disulfide bonds within mucus, thinning and easing its expulsion.

NAC is a free radical scavenger and thus supports epithelial cell health and healthy cilia activity in the respiratory tract. NAC is also a precursor to the antioxidant glutathione, and supplemental NAC increases tissue levels of glutathione.

As fundamental components of the immune system, lymphocytes rely on glutathione to function properly. Tissues enhanced with glutathione support overall antioxidant protection and help to maintain a healthy immune response.

A multicenter, randomized, double-blind trial with 262 participants indicated that NAC supplementation for six months supported upper respiratory tract and immune system health. A recent meta-analysis of eight double- blind, placebo-controlled trials provided additional support for NAC’s ability to support respiratory tract health.


  • Support for respiratory function and health
  • Antioxidant immune system support
  • Detoxification support


Each Vegetarian Capsule contains:

  • N-Acetyl-L-Cysteine – 600 mg

Other Ingredients: Hydroxypropyl methylcellulose (capsule), ascorbyl palmitate
Gluten-free, non-GMO

Suggested Use

As a dietary supplement, adults take 1 N-Acetyl-L-Cysteine 600 mg capsule, 1-3 times daily between meals, or as directed by one of our health coach professionals.


If you are pregnant, nursing, have any health condition or taking any medication, consult your health professional before using this product. Keep out of reach of children.


Store in a cool, dry place, away from direct light. Use only if safety seal is intact.


Douglas Laboratories

Douglas Laboratories® researches, develops and manufactures the right suite of rigorously designed, science-based, healthy aging supplements, and provides customized practice support. With a 60-year heritage of innovating and designing products to meet the needs of healthcare professionals, we push the potential of both clinical practices and patients to continually perform at their personal best, today and in the future.
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N-Acetyl-L-Cysteine 600 mg 90ct by Douglas LaboratoriesN-Acetyl-L-Cysteine 600 mg
Original price was: $30.60.Current price is: $26.01.
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