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Abbreviations
Prescription Abbreviations
| Term | Definition |
|---|---|
| q.d. | quaque die (once a day) |
| b.i.d. | bis in die (twice a day) |
| t.i.d. | ter in die (three times a day) |
| q.i.d. | quater in die (four times a day) |
| p.r.n. | pro re nata (as needed) |
| s.o.s. | si opus sit (if there is a need) |
| a.c. | ante cibum (before meals) |
| p.c. | post cibum (after meals) |
| h.s. | hora somni (at bedtime) |
| q.h. | quaque hora (every hour) |
| q.o.d. | quaque altera die (every other day) |
| stat. | statim (immediately) |
| t.i.w. | ter in week (three times a week) |
| b.i.w. | bis in week (twice a week) |
| m.s. | manuscriptum (take as directed) |
| c.c. | cubic centimeter (unit of volume; equivalent to ml) |
| gtt. | gutta (drop) |
| ad lib. | ad libitum (as desired) |
| i.v. | intravenous (injected directly into the vein) |
| i.m. | intramuscular (injected into the muscle) |
| s.c. or subcut. | subcutaneous (under the skin) |