Also indexed as:Acetyl Cysteine, NAC
One study reported that 19% of people taking NAC orally experienced nausea, vomiting, headache, dry mouth, dizziness, or abdominal pain.380 These symptoms have not been consistently reported by other researchers, however.
Although a great deal of research has shown that NAC has antioxidant activity, one small study found that daily amounts of 1.2 grams or more could lead to increased oxidative stress.381 Extremely large amounts of cysteine, the amino acid from which NAC is derived, may be toxic to nerve cells in rats.
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