Over 4 billion prescriptions are issued each year. However, not all prescriptions are effective. In fact, the response rate to many drugs is only 50-75%. Adverse drug reactions (ADRs) account for up to 7% of all hospital admissions. The negative impact of ADRs on children is especially severe, compared to that on adults. Most of the reactions were of moderate severity. This indicates the need for robust ADR monitoring among patients to ensure the safety of drug therapy.