N-acetyl cysteine (NAC) is a drug approved by the U.S. Food and Drug Administration to help reduce the thickness of mucus and ease its removal as well as to reverse acetaminophen toxicity. Also sold ...

MIT scientists have identified cysteine — an amino acid found in foods like meat, dairy, beans, and nuts — as a potent trigger for intestinal repair. In mice, a cysteine-rich diet activated immune ...