(1997; 41 pages)
3.2 Use of stems
Usually, an INN consists of a random, fantasy prefix and a common stem; substances belonging to a group of pharmacologically related substances show their relationship by the use of a common stem. Sometimes sub-stems are established to differentiate between different related groups of substances, e.g. -olol for b-adrenoreceptor antagonists and antihypertensives, -teplase for tissue-type-plasminogen activators and -uplase for urokinase-type-plasminogen activators.
A list of common stems used in the selection of INNs may be found in Annex 3.