[The development of severe methemoglobinemia in patients receiving "Almagel A"].

This clinical case and the literature review show possible development of methemoglobinemia due to the use of local anesthetics, included in drugs for the gastrointestinal diseases treatment, in particular benzocaine, which is the methaemoglobin forming agent. These drugs are common and often taken by the patients themselves without any control. The aim of our paper is to draw the attention of physicians to the risk of the widely known drug administration which can be purchased without a prescription.