Miralax is NOT used in antifreeze! Antifreeze is ethelyne glycol, not PEG.

@standinginfaith - though written specifically about use of polyethylene glycol or PEG 3350 (Miralax) in kids, you and others in this discussion may find this article useful:

- Is Miralax Safe for Kids? https://www.parents.com/parents-magazine/parents-perspective/is-miralax-safe-for-kids-an-expert-weighs-in/

Under the subhead with the same title as the article, "Is Miralax Safe for Kids?" see this excerpt:

Experts like David Bunkin, M.D., assistant professor of pediatric gastroenterology and hepatology at Mount Sinai in New York City, remain hopeful that the CHOP study will eventually confirm the laxative's safety for kids. He tells Parents that while the FDA found trace amounts of those two potentially toxic chemicals [small amounts of ethylene glycol and diethylene glycol—the same ingredients found in anti-freeze—in Miralax] in batches of Miralax tested years ago, ownership of the drug has since changed hands, and follow-up screenings have not revealed the chemicals.