An<unk>  (INN; also known as rINN, for recommended<unk>  is the official<unk>  or generic<unk>  given to a pharmaceutical substance, as designated by the World Health Organization (WHO). The plethora of<unk> d proprietary preparations containing a given substance can lead to confusion about the identity of the active ingredient.
INNs facilitate communication by providing a standard<unk>  for each substance. A similar role is played in chemistry by IUPAC<unk> s; however, these are less suited to common usage, being typically very long and unwieldy.
WHO issues INN<unk> s in English, Latin, French, Russian, and Spanish; Arabic and Chinese versions, although not included in the original scheme, are now also being issued.
International Nonproprietary Name
Creative Commons license
United States Adopted Name
Designer drug
Repugnant market
Scientific method
Impact factor
Evidence-based medicine