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Antioxidant support; Cellular health
Adults seeking daily antioxidant support or those with busy lifestyles who want simple capsule dosing.
Take 1 capsule twice daily, preferably with meals and water to support comfortable digestion.
Non-GMO; Kosher; Halal; Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut, or sesame; Produced in a GMP facility that processes these allergens.
NAC supplies cysteine to help replenish glutathione, a key intracellular antioxidant that supports redox balance and cellular protection.
Caution: May cause mild gastrointestinal discomfort in some people; take with food and water to support tolerance.
Selenium is incorporated into selenoproteins such as glutathione peroxidases that help neutralize reactive oxygen species and support antioxidant enzyme activity.
Caution: High total selenium intake from diet and supplements may be excessive; avoid combining with multiple selenium-containing products.
NAC provides the building block cysteine to support glutathione levels, while selenium serves as a cofactor in antioxidant enzymes like glutathione peroxidase. Together they support the body’s antioxidant network through both substrate supply and enzyme function.
Label Warning: For adults only. Consult a physician if pregnant or nursing, taking medication, or have a medical condition. Do not eat freshness packets. Keep bottle tightly closed; color variation and speckling may occur.
Who should be cautious: People who are pregnant or nursing, have ongoing health conditions, or use medications should talk with a healthcare provider before use. Those with sulfur sensitivity may wish to use caution due to NAC content.
Storage: Store in a cool, dry place after opening. Keep freshness packets in the bottle until it is empty. Keep the bottle tightly closed.
Many users say they feel better and more energized after taking it.
Several reviewers mention easier breathing and seasonal respiratory ease.
A few users did not notice clear changes or were unsure of the effects.
This product is guaranteed authentic and backed by our easy returns & refunds policy. Details
Vitamin C helps regenerate glutathione, which NAC supports as a precursor. Together, they may enhance antioxidant defenses and help maintain cellular health under oxidative stress.
AI generated. Not medical advice.
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N-Acetyl Cysteine (NAC) is a stable form of the non-essential amino acid cysteine. It is a sulfur-containing amino acid that acts as a stabilizer for the formation of protein structures, and is also necessary for the formation of glutathione. Molybdenum and selenium are essential trace minerals that facilitate the production of several important enzymes.
Take 1 capsule twice daily.
Hypromellose (cellulose capsule), stearic acid (vegetable source), citric acid and microcrystalline cellulose.
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients.
Produced in a GMP facility that processes other ingredients containing these allergens.
Made and quality tested in the USA with globally sourced ingredients.
Store in a cool, dry place after opening.
For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children.
Do not eat freshness packets enclosed.
Keep freshness packets in bottle until it is empty. Keep bottle tightly closed at all times in between usage. Natural color variation may occur in this product when exposed to air. Speckling in capsule may occur but does not affect product quality.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
| Supplement facts | ||
| Serving Size: 1 Capsule | ||
| Amount Per Serving | %Daily Value | |
| Selenium (elemental) (from 5 mg L-Selenomethionine) | 25 mcg | 45% |
| N-Acetyl Cysteine (NAC) | 600 mg | † |
| †Daily Value not established. | ||
