This article presents a review on prescription error in elderly person which defines as a failure in the treatment process that leads to or has the potential to lead harm to the patient. Prescription errors are among the most common medical errors harming at least 1.5 million people every year. Medicines can do a lot of good but they also have the potential to cause harm are one of the most common causes of patient harm and prescribing accounts for a large proportion of prescription error. This evidence scan examines strategies to reduce prescribing errors. It aims to find the reason of prescription error and make public aware about its effects. Include mistakes or inaccuracies when choosing and ordering treatments such as wrong doses or illegible prescriptions. Older person are greater risk of prescription error. Prescription errors compromise patient confidence in the health-care system and increase health-care costs. Health professionals and managers are always looking for ways to improve the quality and safety of healthcare. This document addresses medication errors—episodes in drug mis-adventuring that should be preventable through effective systems controls involving pharmacists, physicians and other prescribers, nurses, risk management personnel, legal counsel, administrators, patients, and others in the organizational setting, as well as regulatory agencies and the pharmaceutical industry.