|
A
| Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk |
|
B
| May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk |
|
C
| Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done |
|
D
| Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk |
|
X
| Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist |
|
N A
| Information not available |
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