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Pharmacy Tech
How Often to Take Your Medication
| Term | Definition |
|---|---|
| ad lib | freely, as needed |
| bid | twice a day |
| prn | as needed |
| q | every |
| q3h | every 3 hours |
| q4h | every 4 hours |
| qd | every day |
| qid | four times a day |
| qod | every other day |
| tid | three times a day |