Intoxication with paraquat has been rarely described in our country. We present a case of a 66-years-old man admitted to our hospital five hours after an accidental ingestion of a sip of paraquat. Despite therapy with gastric lavage, Füller's Soil, Magnesium Sulphate, liquids and hemoperfusion, the patient developed Multiple Organic Failure and died 48 hours after his hospitalization. Plasmatic levels of the herbicide were very high. Typical clinical data, prognosis factors and therapeutical management of this intoxication are described.