NAC 600 mg Capsules
WhatToTrustTM Score
12345678910
NOW®
Last updated: Mar 11, 2026
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. Selenium is an essential trace mineral that facilitates the production of several important enzymes.*
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NAC 600 mg Capsules Ingredients*
We only evaluate bioactive ingredients—the ones that truly contribute to a product's performance. Below is a list of bioactive ingredients found in this product.
For each ingredient, the quantity in parentheses indicates the amount per serving.
Selenium (as L-Selenomethionine) is an easily absorbed form of selenium, an essential mineral that's known to act as an antioxidant and supports thyroid and immune function.
N-Acetyl Cysteine (NAC) is a potent antioxidant and precursor to glutathione, widely used for its detoxifying, mucolytic, and neuroprotective benefits.
*These product and ingredient description statements have not been evaluated by the Food and Drug Administration (FDA). This product or its ingredients are not intended to diagnose, treat, cure or prevent any disease.
Product description and ingredient list are obtained from the product's brand/company website. Ingredient description is provided by our expert.
WhatToTrustTM scores are based on ingredient quality tests as well as pre-clinical and clinical testing to ensure that a product is scientifically developed and manufactured.
Breakdown of WhatToTrustTM Score for this product
WhatToTrustTM Science Score
10/10
Ingredient Quality Testing (Batch-to-Batch Testing)
Identity and Potency Testing
yes
Purity/Contaminant Testing
yes
Ingredient Validation Testing
Ingredient Validation Pre-clinical Testing (non-Canomiks test)
no
CanTrust by Canomiks® Ingredient Validation Pre-clinical Testing and Certification
no
Ingredient Clinical Trial/Testing
yes - (Product website does not mention clinical trial, but similar ingredients 've been clinically tested.)
Borrowed Science
no
Product Validation Testing
Product Validation Pre-clinical Testing (non-Canomiks test)
no
CanTrust by Canomiks® Product Validation Pre-clinical Testing and Certification
no
Product Clinical Trial/Testing
yes - (Product website does not mention clinical trial, but similar products have been clinically tested.)
Borrowed Science
no
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