When I use a word . . . The languages of medicines—International Nonproprietary Names (INNs)

Abstract

The system of names for medicines known as International Nonproprietary Names (INNs) was introduced by the World Health Organization (WHO) in the 1950s. No nomenclatural system is perfect, and the INN system is no different from any other in that respect. However, despite inconsistencies, the system has proved useful in bringing a degree of uniformity to the way in which drugs are named internationally. Over the years the INNs have gradually been adopted as standard by many countries, and they may have been helpful in reducing the risks of medication errors, in addition to introducing uniformity of nomenclature, making communication easier.