List Of Common Prescription Abbreviations
| Abbreviation | Meaning |
| Rx | Prescription |
| Sig | Write on label (directions for patient) |
| q.d. | Once daily |
| b.i.d. | Twice a day |
| t.i.d. | Three times a day |
| q.i.d. | Four times a day |
| q_h | Every _ hours (e.g., q4h = every 4 hours) |
| prn | As needed |
| stat | Immediately |
| ac | Before meals |
| pc | After meals |
| hs | At bedtime |
| p.r. | Per rectum |
| po | By mouth |
| sl | Sublingual (under the tongue) |
| top | Topically (on the skin) |
| IM | Intramuscular |
| IV | Intravenous |
| SC or SubQ | Subcutaneous |
| tab | Tablet |
| cap | Capsule |
| gtt | Drops |
| supp | Suppository |
| susp | Suspension |
| sol | Solution |
| ung | Ointment |
| crm | Cream |
| mg | Milligram |
| ml | Milliliter |
| tsp | Teaspoon (5 ml) |
| tbsp | Tablespoon (15 ml) |
| qs | Quantity sufficient |
| ad lib | As desired |
| AU | Both ears |
| AD | Right ear |
| AS | Left ear |
| OU | Both eyes |
| OD | Right eye |
| OS | Left eye |
| mcg | Microgram |
| IU | International Units |
| NKDA | No known drug allergies |
| DAW | Dispense as written |
| NPO | Nothing by mouth |
| cc | Cubic centimeter |
| qh | Every hour |
| qam | Every morning |
| qpm | Every evening |
| qs ad | A sufficient quantity to make |
| disp | Dispense |
| div | Divide |
| elix | Elixir |
| emuls | Emulsion |
| inj | Injection |
| mEq | Milliequivalent |
| neb | Nebulizer |
| non rep | Do not repeat |
| NTE | Not to exceed |
| o.d. | Once daily (can also mean right eye, context matters) |
| O.S. | Left eye |
| O.U. | Both eyes |
| p | After |
| qam | Every morning |
| qod | Every other day |
| qs qv | A sufficient quantity as you see fit |
| s | Without |
| ss | One half |
| tid | Three times a day |
| u.d. | As directed |
| ut dict | As directed |
| wk | Week |