Prescription Abbreviations

Prescriptions Abbreviations

Abbreviation Definition Abbreviation Definition
p.o - orally q.d. - once a day
I.M. - intramuscularly b.i.d. - twice a day
Subq. - subcutaneous t.i.d. - three times a day
Rectally - rectally q.i.d. - four times a day
I.V. - intravenous q.h.s. - before bed
O.D. - in the right eye 5X a day - five times a day
O.S. - in the left eye q.4h - every four hours
O.U. - in both eyes q.6h - every six hours
q.o.d. - every other day
prn. - as needed

- One

- Two q.t.t. - drop
- Three a.c. - before meals
- Four p.c. - after meals
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