Resource Hub
The Sig Code Reference
Daily pharmacy operations and clinical reference tools, consolidated into a single professional toolkit.
| Code | Meaning | Latin Base |
|---|---|---|
| AAA | Apply to affected area | Ab utere ad affectam |
| AC | Before meals | Ante Cibum |
| AD | Right ear | Auris Dextra |
| AS | Left ear | Auris Sinistra |
| ATC | Around the clock | |
| AU | Both ears | Auris Utraque |
| BID | Twice daily | Bis in Die |
| C | With | Cum |
| GTT | Drop(s) | Gutta(e) |
| HS | At bedtime | Hora Somni |
| IM | Intramuscular | Intra Musculus |
| IV | Intravenous | Intra Venam |
| NR | No Refills | Non Repetatur |
| OD | Right eye | Oculus Dexter |
| OS | Left eye | Oculus Sinister |
| OU | Both eyes | Oculus Uterque |
| PC | After meals | Post Cibum |
| PO | By mouth | Per Os |
| PRN | As needed | Pro Re Nata |
| Q12H | Every 12 hours | Quaque XII Hora |
| Q4H | Every 4 hours | Quaque IV Hora |
| Q6H | Every 6 hours | Quaque VI Hora |
| Q8H | Every 8 hours | Quaque VIII Hora |
| QD | Once daily | Quaque Die |
| QID | Four times daily | Quater in Die |
| QOD | Every other day | Quaque Altera Die |
| QS | Quantity Sufficient | Quantum Sufficiat |
| S | Without | Sine |
| SL | Sublingual (under the tongue) | Sub Lingua |
| SQ | Subcutaneous | Sub Cutis |
| SS | One half | Semi |
| STAT | Immediately | Statim |
| TID | Three times daily | Ter in Die |
| TOP | Topically | |
| UD | As directed | Ut Dictum |
| WA | While awake |
Need expert consulting?
Get a free 30-minute deep dive into your pharmacy operations.