X-Message-Number: 15454 Date: Fri, 26 Jan 2001 12:07:30 -0500 From: "Henry R. Hirsch" <> Subject: PEG and Vitrification: Toxicity Doug Skrecky's message #15143 on vitrification and polyethylene glycol (PEG) reminded me of a recent PEG experience. I drank 4 liters (!) of PEG solution to clean out my colon in preparation for a colonoscopy. It was not pleasant, but I survived quite well, as expected. This indicates that PEG at low concentrations is not toxic. PEG is not too different chemically from the widely used automotive antifreeze ethylene glycol, which, at higher concentrations, IS toxic. Have any experiments been reported other than the one Doug cited that are relevant to application of PEG to perfusates for cryonics? Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=15454