In general, abbreviations should not be used in prescription writing; however, it is recognized that at present some Latin abbreviations are used when prescribing. These should be limited to those listed here.

    Abbreviations used in prescription writing
  • a.c. Before meals
  • ad. lib. At pleasure
  • amp. Ampoule
  • b.i.d. Twice a day
  • cap. Capsule
  • g Gram
  • h Hour
  • i.m. Intramuscular
  • i.p. Intraperitoneal
  • i.v. Intravenous
  • m Square metre
  • mg Milligram
  • ml Millilitre
  • o.m. In the morning
  • o.n. At night
  • p.c. After meals
  • prn As required
  • q Every, e.g. q8h = every 8 hours
  • q.i.d./q.d.s Four times a day
  • q.s. A sufficient quantity
  • s.c. Subcutaneous
  • s.i.d. Once a day
  • Sig Directions/label
  • stat Immediately
  • susp. Suspension
  • tab Tablet
  • t.i.d./t.d.s. Three times a day
    Other abbreviations used in this Formulary
  • ACE Angiotensin converting enzyme
  • ACTH Adrenocorticotrophic hormone
  • AV Atrioventricular
  • CBC Complete blood count
  • CHF Congestive heart failure
  • CNS Central nervous system
  • COX Cyclo-oxygenase
  • CRF Chronic renal failure
  • CSF Cerebrospinal fluid
  • d Day(s)
  • DIC Disseminated intravascular coagulation
  • ECG Electrocardiogram
  • EPI Exocrine pancreatic insufficiency
  • GI Gastrointestinal
  • h Hour(s)
  • Hb Haemoglobin
  • min Minute
  • p.o. By mouth, orally
  • PU/PD Polyuria/polydipsia
  • RBC Red blood cell
  • SLE Systemic lupus erythematosus
  • STC Special Treatment Certificate
  • VPC Ventricular premature contraction
  • WBC White blood cell
  • wk Week(s)
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