NAC at 600mg hits the minimum effective dose and is the standard single-dose amount used in respiratory studies. Selenium at 25mcg is a thoughtful support addition (antioxidant synergy with NAC) though below its 55mcg minimum. Per masterprompt rules, underdosed support cannot subtract. Two caps daily would reach optimal 1200mg.
The set is generated, never written by the brand.
NOW Foods NOW NAC 600mg: the formulation holds up. Lead: Selenium at 25 mcg. NAC at 600mg hits the minimum effective dose and is the standard single-dose amount used in respiratory studies. Clinical dose on the primary, and the panel holds together.
Antioxidant support, liver health, respiratory health, glutathione production.. The N-Acetyl Cysteine dose is clinical for many uses. However, the selenium inclusion is too low to be effective. This underdosing of a secondary ingredient limits the overall product score.
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Also on the label (inactive): Hypromellose (cellulose capsule), Stearic Acid (vegetable source), Citric Acid, Microcrystalline Cellulose

This read comes from the product's own supplement facts panel. Every dose was cross-referenced with published clinical trials to see whether it matches what the studies actually used.

