When free radicals attack, fight back with NAC! As a powerful antioxidant amino acid, Swanson NAC (N-acetyl cysteine) is an important weapon in the war against free radicals. NAC helps replenish glutathione, a critical component of the body’s defense system. It supports liver health and much more. FAQ Q: Does n-acetyl cysteine have an odor? A: N-acetyl cysteine (NAC) is a derivative of the non-essential sulfur-containing amino acid cysteine. Sulfur has an unpleasant odor commonly described as rotten egg smell. Some batches smell stronger than others.
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