ABC classification system

The ABC classification system was designed to make it possible to control particular drugs according to their comparative harmfulness either to individuals or to society at large when they were misused.6 The ABC system has its origins in the Misuse of Drugs Act (MDA) 1971, which introduced the concept of 'controlled drugs' and (as amended) constitutes the main piece of legislation regulating the availability and use of these drugs. The purpose of the Act was to provide a coherent framework for...