N Acetyl L Cysteine Life Extension Antioxidant Glutathione sounds like the glow secret, until your body breaks most of it down before it even works. That's why LIGHT UP does it differently Instead of adding more, it helps L Cysteine for Glutathione Not all supplements work the same. Some just add. Some activate. NAC is your body's antioxidant switchfueling glutathione, calming the brain, and supporting immunity. This is how real health works. From the Amazon.com: Designs for Health NAC 900mg N Acetyl L Cysteine, Antioxidant Glutathione Precursor Detox + Workout Recovery Support Non GMO + Gluten Free Supplement (120 Capsules) : Health & Household