We gathered information about frequency of self-medication, symptoms that provoked self-medication, with which antibiotics patients self-medicated, whom they went to for advice upon self-medicating, and if they read the antibiotic information handout. We defined antibiotics as the following: medications that treat bacterial and protozoal infections, and that are found on the World Health Organization’s (WHO) Model list of Essential medicines and on the Guatemalan national “basic list” of medications [24,25].