http://www.sciencedaily.com/releases...0106170748.htm
Old Gastrointestinal Drug Slows Aging, Researchers Say
ScienceDaily (Jan. 7, 2009) — Recent animal studies have shown that clioquinol – an 80-year old drug once used to treat diarrhea and other gastrointestinal disorders – can reverse the progression of Alzheimer's, Parkinson's and Huntington's diseases. Scientists, however, had a variety of theories to attempt to explain how a single compound could have such similar effects on three unrelated neurodegenerative disorders.