
				December of 2011, the FDA placed MiraLAX — a  polyethylene glycol-containing blockbuster drug marketed by Merck &  Co — on its Adverse Event Reporting System (AERS) in connection to  “neuropsychiatric events.” Besides MiraLAX, this warning also applies to Movicol,  Dulcolax, Colyte, Colovage, Co-Lav, Clensz-Lyte, ClearLax, GoLYTELY,  GaviLyte C, GlycoLax, Go-Evac, GlycoPrep, E-Z-Em Fortrans, Halflytely,  Lax-a-Day, LaxLyte, MoviPrep, Macrogol, NuLytely, OCL, Peg-Lyte, Prep  Lyte, Softlax, TriLyte, and all other brands with Polyethylene Glycol  3350 (PEG for short) as their active ingredient. 
According to the National Institute for Occupational Safety and Health, it is an extremely toxic substance: 
“Ethylene glycol is chemically broken down in the body into toxic compounds. It and its toxic byproducts first affect the central nervous system (CNS), then the heart, and finally the kidneys. Ingestion of sufficient amounts [as little as 30 ml — KM] 
can be fatal.” [
2]
The term “neuropsychiatric events” in the FDA's safety  alert refers to neurologic disorders of the central and peripheral  nervous systems such as autism, dementia, depression, schizophrenia,  multiple sclerosis, Alzheimer’s and Parkinson’s diseases, and similar  others [
3].  These conditions result from PEG's direct (through cellular damage) and  indirect (through malnutrition of essential micronutrients)  neurotoxicity. No surprise there considering the quotation above.
Lead, mercury, and arsenic are some of the best-known  neurotoxins. So are snake venom, curare, botulinum, and tetanus. PEG is  more like lead or mercury — slow-acting, insidious, and difficult to pin  down conclusively onto various “slow-brewing” neurological disorders.
 In addition to neurotoxicity, the following serious  complications have been associated with polyethylene glycol-containing  laxatives:   see article for rest....