| Abbreviation | Definition |
|---|---|
| DR | Delayed Release |
| DR | Doctor (may be a doctor or a dentist) |
| dr | drachm (=60 grains) |
| DTAP | Diphtheria, Tetanus toxoids, and Acellular Pertussis vaccine |
| DTD | Dentur Tales Doses |
| DTwP | diphtheria and tetanus toxoids and whole cell vaccines |
| DWSCL | Daily wear soft contact lenses |
| e.o.m. | every other month |
| E4W | Every 4 Weeks |
| EA | Emergency Assistant |
| ED | Effective Dose |
| EE | ethinyl estradiol |
| E-IUD | emergency intrauterine device |
| elix. | elixir |
| EMB | Ethambutol |
| EMEA | European Medicines Evaluation Agency |
| EMLA | EMulsion Local Anesthetic |
| EMP | Ex Modo Prescripto (as directed) |
| EMSAM | Selegiline Transdermal System |
| EMT | Emergency Medical Technician |