| Drug |
Pregnancy category |
Use during lactation |
| Nalbuphine |
B,D if prolonged use or high doses at term |
|
| Nalidixic acid |
C |
|
| Nalorphine |
D |
|
| Naloxone |
B |
Use with caution |
| Naltrexone |
B |
Safe |
| Naproxen |
C |
Safe |
| Natamycin |
C (ophthalmic use ) |
|
| Nedocromil sodium |
B |
Safe |
| Nelfinavir |
B |
|
| Neomycin |
D |
Safe |
| Neostigmine |
C |
|
| Netilmicin |
D |
|
| Nicardipine |
C |
|
| Nicotinic acid |
B |
Unsafe |
| Nifedipine |
C |
Safe |
| Nimodipine |
C |
Safe |
| Nitazoxanide |
B |
Use with caution |
| Nitrazepam |
C |
Safe, caution in chronic use, infant may have drowsiness |
| Nitrofurantoin |
B |
Safe |
| Nitrous oxide |
A |
Safe |
| Nizatidine |
B |
Safe |
| Noradrenaline |
C |
Use with caution |
| Norethisterone |
D |
Safe in low dose |
| Norfloxacin |
B |
Safe |
| Norgestrel |
X |
|
| Nortriptyline |
C |
Safe |
| Nystatin |
C(mouth/throat/oral/topical)A(vaginal) |
Safe
|
