Life Extension N-Acetyl-L-Cysteine (NAC), Immune Response, Respiratory Health, Liver Health, NAC 600 mg, antioxidant Defense, Free radicals, Easy to Absorb, 60 Capsules
Life Extension N-Acetyl-L-Cysteine (NAC), Immune Response, Respiratory Health, Liver Health, NAC 600 mg, antioxidant Defense, Free radicals, Easy to Absorb, 60 Capsules
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Life Extension N-Acetyl-L-Cysteine (NAC), Immune Response, Respiratory Health, Liver Health, NAC 600 mg, antioxidant Defense, Free radicals, Easy to Absorb, 60 Capsules

4.8 stars out of 2348 reviews
(4.8)|
2,348 ratings

Key item features

  • Immune support – N-acetyl-L-cysteine, or NAC for short, is a novel nutrient that helps support the body’s healthy immune response, as well as bronchial and respiratory health.
  • Liver health – In addition to respiratory health, NAC supports liver health and function. This supplement provides 600 mg of NAC in every capsule.
  • Antioxidant protection – N-acetyl-L-cysteine helps replenish glutathione, a powerful antioxidant. NAC is also an antioxidant, protecting cells from oxidative stress.
  • Ingredients matter – We use only the finest raw ingredients with the quality and purity you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the —and a Certificate of Analysis is available for every one.
  • Live your healthiest life – We believe the answers to a healthier life are within reach, and that scientific research is the key to getting us there. That’s why so many of our formulas feature specific ingredients and amounts based on scientific studies.
Current price is Now $10.13
You save $1.87
was $12.00
16.9 ¢/count
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Comparison Chart:
Size600 mg, 60 capsulesLife Extension N-Acetyl-L-Cysteine (NAC), Immune Response, Respiratory Health, Liver Health, NAC 600 mg, antioxidant Defense, Free radicals, Easy to Absorb, 60 Capsules-Life Extension NAD Cell Regenerator Nicotinamide Riboside, 30 Vegetarian Capsules90 Count (Pack of 1)Life Extension Se-Methyl L-Selenocysteine, advanced form of selenium, antioxidant defense, cellular health, healthy aging, vegetarian, gluten-free, non-GMO, 90 capsules120 Count (Pack of 1)NAC Supplement 1200mg – Optimal Absorption Immune Support with Powerful Antioxidants - Respiratory & Liver Health Support - Bottled in USA, Vegan, GMO & Gluten Free N-Acetyl-L-Cysteine - 120 Capsules120 Veg CapsulesVitamatic NAC Supplement N-Acetyl-L-Cysteine (NAC) with Milk Thistle 50:1 Extract - Supports Immune, Respiratory, Liver Health, 1200 mg per Serving, 120 Veg Capsules-NAC (N-Acetyl Cysteine) - Dietary Supplement with Selenium - 1,200mg, 150 Vegetable Capsules - Free Radical Protection - Normal Immune System Function - Maintains Cellular Health30 CapsulesLife Extension Bio-Quercetin®, immune health supplement, heart health support, gluten free, non-GMO, vegetarian, 30 capsules60 Count (Pack of 1)Life Extension Zinc Lozenges, zinc oxide, zinc gluconate, tasty fast-acting immune support, gluten-free, non-GMO, vegetarian, 60 lozenges30 CapsulesLife Extension Cytokine Suppress® with EGCG - Support a Healthy Inflammatory Response - Gluten-Free, Non-GMO - 30 Vegetarian Capsules60 Count (Pack of 1)Life Extension Melatonin, 3 mg, optimal sleep support, healthy circadian rhythms, cellular defense, gluten-free, non-GMO, vegetarian, 60 chewable lozenges
Enteral medication formCapsulesLife Extension N-Acetyl-L-Cysteine (NAC), Immune Response, Respiratory Health, Liver Health, NAC 600 mg, antioxidant Defense, Free radicals, Easy to Absorb, 60 CapsulesCapsulesLife Extension NAD Cell Regenerator Nicotinamide Riboside, 30 Vegetarian CapsulesCapsulesLife Extension Se-Methyl L-Selenocysteine, advanced form of selenium, antioxidant defense, cellular health, healthy aging, vegetarian, gluten-free, non-GMO, 90 capsulesCapsulesNAC Supplement 1200mg – Optimal Absorption Immune Support with Powerful Antioxidants - Respiratory & Liver Health Support - Bottled in USA, Vegan, GMO & Gluten Free N-Acetyl-L-Cysteine - 120 CapsulesCapsulesVitamatic NAC Supplement N-Acetyl-L-Cysteine (NAC) with Milk Thistle 50:1 Extract - Supports Immune, Respiratory, Liver Health, 1200 mg per Serving, 120 Veg CapsulesCapsulesNAC (N-Acetyl Cysteine) - Dietary Supplement with Selenium - 1,200mg, 150 Vegetable Capsules - Free Radical Protection - Normal Immune System Function - Maintains Cellular HealthCapsulesLife Extension Bio-Quercetin®, immune health supplement, heart health support, gluten free, non-GMO, vegetarian, 30 capsulesLozengesLife Extension Zinc Lozenges, zinc oxide, zinc gluconate, tasty fast-acting immune support, gluten-free, non-GMO, vegetarian, 60 lozengesCapsulesLife Extension Cytokine Suppress® with EGCG - Support a Healthy Inflammatory Response - Gluten-Free, Non-GMO - 30 Vegetarian CapsulesLozengesLife Extension Melatonin, 3 mg, optimal sleep support, healthy circadian rhythms, cellular defense, gluten-free, non-GMO, vegetarian, 60 chewable lozenges
FlavorUnflavoredLife Extension N-Acetyl-L-Cysteine (NAC), Immune Response, Respiratory Health, Liver Health, NAC 600 mg, antioxidant Defense, Free radicals, Easy to Absorb, 60 CapsulesUnflavoredLife Extension NAD Cell Regenerator Nicotinamide Riboside, 30 Vegetarian CapsulesUnflavoredLife Extension Se-Methyl L-Selenocysteine, advanced form of selenium, antioxidant defense, cellular health, healthy aging, vegetarian, gluten-free, non-GMO, 90 capsulesUnflavoredNAC Supplement 1200mg – Optimal Absorption Immune Support with Powerful Antioxidants - Respiratory & Liver Health Support - Bottled in USA, Vegan, GMO & Gluten Free N-Acetyl-L-Cysteine - 120 CapsulesUnflavoredVitamatic NAC Supplement N-Acetyl-L-Cysteine (NAC) with Milk Thistle 50:1 Extract - Supports Immune, Respiratory, Liver Health, 1200 mg per Serving, 120 Veg CapsulesUnflavoredNAC (N-Acetyl Cysteine) - Dietary Supplement with Selenium - 1,200mg, 150 Vegetable Capsules - Free Radical Protection - Normal Immune System Function - Maintains Cellular HealthUnflavoredLife Extension Bio-Quercetin®, immune health supplement, heart health support, gluten free, non-GMO, vegetarian, 30 capsulesCitrus-Orange FlavorLife Extension Zinc Lozenges, zinc oxide, zinc gluconate, tasty fast-acting immune support, gluten-free, non-GMO, vegetarian, 60 lozengesNaturalLife Extension Cytokine Suppress® with EGCG - Support a Healthy Inflammatory Response - Gluten-Free, Non-GMO - 30 Vegetarian CapsulesUnflavoredLife Extension Melatonin, 3 mg, optimal sleep support, healthy circadian rhythms, cellular defense, gluten-free, non-GMO, vegetarian, 60 chewable lozenges
Allergen-free statementsGluten-FreeLife Extension N-Acetyl-L-Cysteine (NAC), Immune Response, Respiratory Health, Liver Health, NAC 600 mg, antioxidant Defense, Free radicals, Easy to Absorb, 60 CapsulesGluten-FreeLife Extension NAD Cell Regenerator Nicotinamide Riboside, 30 Vegetarian Capsules-Life Extension Se-Methyl L-Selenocysteine, advanced form of selenium, antioxidant defense, cellular health, healthy aging, vegetarian, gluten-free, non-GMO, 90 capsulesGluten-FreeNAC Supplement 1200mg – Optimal Absorption Immune Support with Powerful Antioxidants - Respiratory & Liver Health Support - Bottled in USA, Vegan, GMO & Gluten Free N-Acetyl-L-Cysteine - 120 CapsulesGluten-FreeVitamatic NAC Supplement N-Acetyl-L-Cysteine (NAC) with Milk Thistle 50:1 Extract - Supports Immune, Respiratory, Liver Health, 1200 mg per Serving, 120 Veg Capsules-NAC (N-Acetyl Cysteine) - Dietary Supplement with Selenium - 1,200mg, 150 Vegetable Capsules - Free Radical Protection - Normal Immune System Function - Maintains Cellular HealthGluten-FreeLife Extension Bio-Quercetin®, immune health supplement, heart health support, gluten free, non-GMO, vegetarian, 30 capsulesGluten-FreeLife Extension Zinc Lozenges, zinc oxide, zinc gluconate, tasty fast-acting immune support, gluten-free, non-GMO, vegetarian, 60 lozengesGluten-FreeLife Extension Cytokine Suppress® with EGCG - Support a Healthy Inflammatory Response - Gluten-Free, Non-GMO - 30 Vegetarian CapsulesGluten-FreeLife Extension Melatonin, 3 mg, optimal sleep support, healthy circadian rhythms, cellular defense, gluten-free, non-GMO, vegetarian, 60 chewable lozenges
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Customer ratings & reviews

4.8 out of 5 stars
stars2,348 ratings2,179 reviews
How item rating is calculated

Reviews summary

Pros
  • : Offered at a cost considered fair and affordable.
  • : Made with premium materials and processing.
  • : Enhances well-being and immune function.
  • : Provides a significant increase in energy levels.
  • : Allows for more air intake.
  • : Helps to build and strengthen the body's natural defenses.
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Showing 1-3 of 2,179 reviews

Nov 17, 2025
Robert
Sold byLife Extension Buyers ClubDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Top rated brand

My General MD stated that I should take NAC along with Milk Thistle for liver health. This particular brand was top rated, and affordable. I noted that if taken at night, they work to prevent "inflammation and mucus clearance." If taken during the day, they work for "athletic performance and increased energy." They are versatile and can be taken to suit your needs. No taste, easy to swallow.

Helpful?3YKEFG76JVBD114313152
Dec 9, 2025
Elaine
5 out of 5 stars review

Seller Verified Purchase

Less coughing!!

My sister uses this for her breathing issues and gave me some because she's doing more, wheezing less. I found, being a long time smoker and lots of coughing, that not only am I coughing less but it's also a much more productive cough when I do! Very pleased with this supplement and I'll keep ordering.

Review from Life Extension
Helpful?3YKEFG76JVBD114313152
Dec 3, 2025
Lori
5 out of 5 stars review

Seller Verified Purchase

Liver Lover

Perfect for detoxing vital organs from pollutants and toxic byproducts we consume without even knowing. Keeps my liver functioning with optimal results.

Review from Life Extension
Helpful?3YKEFG76JVBD114313152

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