prescription abbreviations

prescription abbreviations

standard Latin abbreviations designated as acceptable for written prescriptions (Table 1)
Table 1: Latin abbreviations used in prescription writing
Latin abbreviationLatin termEnglish term
a.c.Ante cibumBefore food
b.d.Bis dieTwice daily
o.d.Omni deiEvery day
o.m.Omni maneEvery morning
o.n.Omni nocteEvery night
p.c.Post cibumAfter food
p.r.n.Pro re nataWhen required
q.d.s.Quarter die sumendumTo be taken four times a day
q.q.h.Quarter quaque horaEvery 4 hours
StatImmediately
t.d.s.Ter die sumendumTo be taken three times a day
t.i.d.Ter in dieThree times daily