Incorrect application (e.g. into the lungs) results in pulmonary aspiration which can sometimes be fatal if immediate medical treatment is not initiated. The use of<unk>  carbon is contraindicated when the ingested substance is an acid, an alkali, or a petroleum product.
Activated charcoal 
Drotaverine
Sodium thiosulfate 
Secobarbital
Fomepizole
Ethallobarbital
Acetylcysteine
Pivhydrazine