Objective: To determine the magnitude, and clinical and biochemical features of methanol poisoning in patients admitted to the emergency room of the Hospital Nacional Dos de Mayo. Materials and methods: An analytical study was performed with data from patients diagnosed with methanol poisoning who were admitted to the emergency room of the Hospital Nacional Dos de Mayo, Lima, Peru. Collected data included age, gender, occupation, place of origin, cocaine use, chronic alcoholism, HIV infection, and clinical data associated with methanol poisoning. For the analysis, statistical measures of central tendency and dispersion were used, and 2x2 contingency tables were developed in the bivariate analysis. For the evaluation of the likelihood ratio, confidence intervals were established at 95 %, and a p-value < 0.05 was considered significant. Results: Ninety percent (90%) of the cases occurre...