Furosemide and Pregnancy
Based on results of animal studies, furosemide may not be safe for pregnant women. In these studies, the drug caused birth defects and unexplained death of both the mother and newborn. If you are taking furosemide and pregnancy occurs, your healthcare provider will weigh the benefits and potential risks before making a recommendation in your particular situation.
Furosemide (Lasix®) is a pregnancy Category C medicine, which means it could potentially cause harm to your unborn child.
The U.S. Food and Drug Administration (FDA) uses a category system to classify the possible risks to a fetus when a specific medicine is taken during pregnancy. Pregnancy Category C is given to medicines that show side effects to the fetus in animal studies but no studies in pregnant women have been done. A pregnancy Category C medicine may still be given to a pregnant woman if a healthcare provider believes that the benefits to the woman outweigh any possible risks to the unborn child.
In animal studies, furosemide has caused unexplained death of both the mother and newborn. Animal studies have also suggested that the drug may cause birth defects of the kidney or urinary system.
However, it is important to note that animals do not always respond to medicines in the same way that humans do. Therefore, as mentioned, furosemide may be given to pregnant women if a healthcare provider believes that the benefits outweigh any possible risks. Generally, the drug should be used in pregnant women only when absolutely necessary. It is generally not recommended for treating high blood pressure during pregnancy.
If you are pregnant or thinking of becoming pregnant while taking furosemide, let your healthcare provider know. He or she will consider the benefits and risks before making a recommendation in your particular situation.