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Timing Abbreviations
Terms used in the timing of medications
| Term | Definition |
|---|---|
| BID | twice daily |
| TID | three times daily |
| Q | every x (Q4hr is every 4 hours, Q3 days is every three days) |
| QD* | daily (not encouraged, often prohibited) |
| QID* | four times daily (not encouraged, often prohibited) |
| AC | before meals |
| PC | after meals |
| prn | as needed |
| ad lib | as desired |
| QHS | at night |