Sort Out Claims About N-Acetyl Cysteine

June 2026

You’ll hear N-acetyl cysteine (NAC) supplements touted as the “master antioxidant.”

NAC is a precursor of glutathione, a potent antioxidant. In theory, NAC supplements can replenish glutathione and reduce cell damage.

As an Rx, we know NAC is used orally or IV for acetaminophen overdose...and via inhalation as a mucolytic.

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