| IND | indomethacin; industrial medicine; investigational new drug |
|---|---|
| NAD | neutrophil actin dysfunction; new antigenic determinant; nicotinamide adenine dinucleotide; nicotini... |
| NADA | New Animal Drug Application |
| NCE | negative contrast echocardiography; new chemical entity; nonconvulsive epilepsy |
| NDA | National Dental Association; New Drug Application; no data available; no detectable activity; no det... |