(2004; 45 pages)
Internationally accepted units and symbols should be used wherever possible. The use of abbreviations in the NF should be kept to a minimum to avoid any potential misinterpretation or confusion. In the WMF, great care has been taken to avoid the use of any abbreviations (Latin or English) regarding the route and frequency of administration of medicines because of the risk of misinterpretation and also because their conventional use may vary greatly from country to country: it is therefore advisable to follow this principle in a NF. For example misinterpretation or careless reading of:
qd = quoque die = once a day, or qid = quater in die = four times a day,
can have life-threatening consequences to the patient. Always use unambiguous instructions, e.g. 4 times daily, by mouth, as in the WMF.