Altered mental status
Intestinal obstruction
Increased risk of aspiration
Ingestion of substances not absorbed by<unk> 
Instances where urgent endoscopy will be needed (eg. Ingestion of caustic material)
Does not work with:
Heavy metals (Iron, Lead, Arsenic, Mercury, Zinc)
Inorganic ions (Lithium, Potassium, Sodium, Fluoride and Iodine)
Hydrocarbons/essential oils
Toxic alcohols (Ethylene Glycol, Methanol, Isopropanol)
Acids/bases
Organophosphates
Heavy metals (Iron, Lead, Arsenic, Mercury, Zinc)
Inorganic ions (Lithium, Potassium, Sodium, Fluoride and Iodine)
Hydrocarbons/essential oils
Toxic alcohols (Ethylene Glycol, Methanol, Isopropanol)
Acids/bases
Organophosphates
Activated charcoal
Multidose activated charcoal
Sodium thiosulfate
Fomepizole
N-Acetylcysteine
Glucagon
Lactulose
Methylene blue