“…[1][2][3] This practice is becoming more frequent and is considered a severe public health problem, not only in developed countries but also in developing countries, as the ease of purchase increases the problem, combined with the lack of the habit of self-care. 1,4 The use of a drug should be safe and effective, for which the consumer should identify the symptoms, therapeutic objectives, dosage and temporality of use of the drug, as well as be clear about the contraindications, comorbidities and adverse effects. The omission of this information leads to irrational and incorrect use of drugs, resulting in late or wrong diagnosis, wrong choice of treatment, inadequate dosage or administration, poor drug interaction, adverse reactions, drug resistance, development of comorbidities and, in severe cases, death.…”