From the Australian Commission on Safety and Quality in Health Care – Medication Complications

It is well know that medication complications are an important contributor to iatrogenic harm in hospitals. Many of the issues are very well known and arise from the use of specific agents from frequently implicated classes. For more information, see https://www.safetyandquality.gov.au/wp-content/uploads/2018/03/Medical-complications-detailed-fact-sheet.pdf