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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Will Taking Clarithromycin During Pregnancy Affect The Fetus?

I had pneumonia and was being treated with clarithromycin when I conceived. The timing of it was as follows:
Feb 23 - conception
Feb 24 - diagnosed with pneumonia
Feb 25 - began 10 day dose of clarithromycin.
Should i be worried about the possible effect on the fetus. So far the numbers (quantitative HCG levels) are normal.
Mon, 31 Aug 2015
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OBGYN,  's  Response
Hello,
Clarithromycin has been categorized as a class C drug during pregnancy. This means that animal studies have shown adverse effects on the embryo and fetus during pregnancy. There are no well controlled studies performed on humans. The drug should be used only when the benefits to the mother and the pregnancy definitely outweigh the risks to the fetus. You can ask your consultant to test for possible fetal effects through blood tests and sonogram to plan further management. Hope this helps.
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Will Taking Clarithromycin During Pregnancy Affect The Fetus?

Hello, Clarithromycin has been categorized as a class C drug during pregnancy. This means that animal studies have shown adverse effects on the embryo and fetus during pregnancy. There are no well controlled studies performed on humans. The drug should be used only when the benefits to the mother and the pregnancy definitely outweigh the risks to the fetus. You can ask your consultant to test for possible fetal effects through blood tests and sonogram to plan further management. Hope this helps.