ethylene glycol is antifreeze. many of them stacked together is polyethylene glycol, which is Miralax.
so why is antifreeze toxic but PEG not?
https://claude.ai/share/17d8e7b4-ffd5-4c96-9ca2-fe71c69d828a because the toxicity of ethylene glycol actually comes from the metabolites when it's broken down by alcohol dehydrogenase. if you make a big polymer of PEG, ADH no longer metabolizes it, so it passes through the digestive system harmlessly.