| FRCD | Fellow of the Royal College of Dentists; fixed ratio combination drug |
|---|---|
| IDDF | investigational drug data form |
| IDS | iduronate sulfatase; immune deficiency state; inhibitor of DNA synthesis; integrated delivery system... |
| IDSAN | International Drug Safety Advisory Network |
| IDU | idoxuridine; injection or intravenous drug user; iododeoxyuridine |