Parathion has been also classified as possible carcinogen to human. The active ingredient comes in two forms in pesticides: methyl parathion and ethyl parathion. Ethyl parathion is registered in Brazil. Methyl parathion has already been banned in most countries since 1980s. A ban on ethyl parathion was proposed during the Directorial Broad session of ANVISA however the re-evaluation procedure was suspended by a court ruling before the implementation of the reassessment