MEDICATIONS

Abbreviations

a.c. before meals or food b.i.d. twice daily h.s. at bedtime
p.c. after meals p.o. by mouth p.r.n. as needed
O.D. right eye O.S. left eye O.U. each eye
meg microgram(s) mg milligram(s) mEq milliequivalent(s)
mL milliliter(s) q.o.d. every other day q.h. every hour
q. 4h. every four hours q. 8h every eight hours q.i.d. four times a day
q.o.d. every other day t.i.d. three times a day