| ABBREVIATION | INDICATION | LATIN |
|---|---|---|
| PO | By Mouth | Per Os |
| NPO | Nothing By Mouth | Nihil Per Os |
| PRN | As Needed | Pro Re Nata |
| *QD | Once Daily | Quaque Die |
| *QOD | Every Other Day | Quaque Altera Die |
| BID | Twice Daily | Bis In Die |
| TID | Three Times Daily | Ter In Die |
| QID | Four Times Daily | Quater In Die |
| QH | Every Hour | Quaque Hora |
| QAM | Every Morning | Quaque Ante Meridiem |
| QPM | Every Evening | Quaque Post Meridiem |
| QHS | Before Bed | Quaque Hora Somni |
| IM | Intramuscular | -- |
| IV | Intravenous | -- |
| *SC | Subcutaneous | -- |
| SL | Sublingual | -- |
| *U | Units | -- |
| *IU | International Units | -- |
| *µg | Microgram | -- |
| *cc | Cubic Centimeters | -- |
| *D/C | Discharge / Discontinue | -- |
| AC | Before Meals | Ante Cibum |
| PC | After Meals | Post Cibum |
| *AU | Both Ears | Auris Uterque |
| *AD | Right Ear | Auris Dextra |
| *AS | Left Ear | Auris Sinistra |
| *OU | Both Eyes | Oculus Uterque |
| *OD | Right Eye | Oculus Dexter |
| *OS | Left Eye | Oculus Sinistra |