| Abbreviation
| Meaning
|
| alt |
Alternating |
| bid |
Twice a day or twice daily |
| biw |
Twice weekly |
| cid |
Five times a day |
| hs |
Bedtime |
| q |
Every |
| q12h |
Every 12 hours |
| q24h |
Every 24 hours |
| q4-6h |
Every 4-6 hours |
| q4h |
Every 4 hours |
| q6h |
Every 6 hours |
| q8h |
Every 8 hours |
| qam |
Every morning or daily in the morning |
| qd |
Daily or once daily (“daily” or “once daily” is preferred to qd) |
| qhs |
Bedtime or daily at bedtime (“night” or “daily at bedtime” is preferred to qhs) |
| qid |
Four times a day |
| q5min |
Every 5 minutes |
| qOd |
Every other day (“every other day” is preferred to qOd) |
| qpm |
Every evening or daily in the evening |
| q week |
Once weekly |
| tid |
Three times daily |
| tiw |
Three times weekly (“three times weekly” is preferred to tiw) |