| qod | every other day [Lat. quaque altera die] |
|---|---|
| qqd | every day [Lat. quoque die] |
| SRD | service-related disability; Society for the Relief of Distress; Society for the Right to Die; sodium... |
| td | three times daily [Lat. ter die] |
| tds | to be taken three times a day [Lat. ter die sumendum] |