Background: The objective of the study was to evaluate the severity of kidney damage retrospectively and to analyze prognostic factors following ethylene glycol (EG) poisonings. Methods: Data concerning the clinical course of patients with EG poisoning between 2000 and 2002 were analyzed. The χ<sup>2</sup> test, Student’s t test, Fisher’s test and the calculation of linear correlation coefficients were used for statistical analysis. Results: Thirty-three discharge records were obtained. Three patients died, and 11 patients developed acute renal failure (mean maximum serum creatinine level 618 µmol/l). Upon discharge, serum creatinine levels were still elevated in 10 patients. In all but 1 patient, renal function completely normalized within 20 months after intoxication. Conclusion: Adult men are the most endangered segment of the population. The most important prognostic factors are the ingested dose and early antidotal treatment. EG toxic kidney damage is reversible.