NOW Supplements, NAC (N-Acetyl Cysteine) 600 mg with Selenium

What the brand says

Sold as “NOW Supplements, NAC (N-Acetyl Cysteine) 600 mg with Selenium, 100 Capsules”

Product Description Maintains Cellular Health* With Selenium 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.* Brand Story By NOW Foods