Improve the authenticity of patient identification. Use two identifier and and date of birth.(Don't use room number. What is medication errors?.It is a preventable event that can cause or lead to harm or death of someone due to inappropriate use of the medication by health care professionals. List of medication errors. Prescription errors. Unauthorized use.Omission errors. Wrong time and wrong dosage. Giving of expires drugs. Improper drug storage. Noncompliance and Adverse reactions should be reported. Medication errors should be reported to the risk management department, your manager and your Nursing Supervisor. Follow your facility policy and procedures.