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SAS Pharmacology
| Question | Answer |
|---|---|
| SID | once daily OR every 24 hours |
| BID | twice daily OR every 12 hours |
| TID | three times daily OR every 8 hours |
| QID | four times daily OR every 6 hours |
| qh | every hour |
| ad lib | as much as desired |
| PO | by mouth |
| IM | intramuscular |
| IV | intravenous |
| IP | intraperitoneal |
| SQ | subcutaneous |
| NPO | nothing by mouth |
| X | for |
| PRN | as needed |
| qd | every day |
| Rx | Prescription |
| Hx | History |
| OS | left eye |
| OD | right eye |
| OU | both eyes |
| AS | left ear |
| AD | right ear |
| AU | both ears |