Jargon Buster - Understanding Prescriptions

Prescriptions are written using a mixture of abbreviations, Latin words and English. This can be confusing. Here’s a simple guide to understanding the jargon.

Abbreviation: Short for the Latin words: In English this means:
ac  ante cibos  before meals
bd  bis in die sumendum twice daily
caps   capsulae capsules
m   mane    morning
n   nocte evening
mg  milligrammum milligram
ml   millilitra millilitre
nocte nocte  at bedtime
pc  post cibos    after meals
prn  pro re nata  as required
qds  quater in die sumendum four times daily 
stat   statim at once
tds  ter in die sumendum  three times daily