Quick reference guide for healthcare professionals
| 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 |
| 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 | -- |
| 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 |