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Is It Safe to Use Azithromycin in Pregnancy?

Mary McMahon
Mary McMahon
Mary McMahon
Mary McMahon

Most research on the safety of azithromycin in pregnancy suggests it doesn't increase risks for pregnant women or developing fetuses. The number of studies is small and the participants in such studies limited, however, so it is possible the medication may cause problems that have not been uncovered with research. This is a common issue with evaluations of the safety of drugs for pregnant women. Studies on drug safety in this situation tend to involve small groups, and the limited sample size can make it easy to miss potentially serious side effects.

The Food and Drug Administration (FDA) in the United States classifies azithromycin in pregnancy as Category B. This means animal studies on the drug show no adverse effects for developing fetuses or their mothers, and there are not enough human studies to pronounce the drug categorically safe. Care providers should prescribe the drug after careful consideration and may use it if no safe alternatives are available. Azithromycin can also be an issue during breastfeeding, as it is excreted in milk.

Azithromycin is considered to be relatively safe during pregnancy, but women who have concerns should discuss them with their doctors.
Azithromycin is considered to be relatively safe during pregnancy, but women who have concerns should discuss them with their doctors.

This medication is a long-acting antibiotic that may be used to treat a range of bacterial infections. Such infections pose a clear risk at any time, but especially while patients are pregnant. As a result, a doctor may determine that the benefits of prescribing azithromycin in pregnancy outweigh the risks of not treating the patient. Alternative medications may not be as effective, or a patient could have existing drug allergies or potential drug conflicts that make them unsafe for use.

A pregnant woman should always consult her obstetrician if she has questions about azithromycin or any other medication.
A pregnant woman should always consult her obstetrician if she has questions about azithromycin or any other medication.

Studies on populations of women who used azithromycin in pregnancy show that the drug did not increase the risk of birth defects or complications for maternal health. In these groups, the rate of birth defects was similar to that of the general population, which ranges between one and three percent. These results suggest that azithromycin is probably safe for use in pregnancy, especially when courses of the medication are kept as short as possible. Patients should also receive routine prenatal care to monitor for any pregnancy complications.

Doctors prescribe azithromycin to pregnant women only when necessary, because its safety has not been proven.
Doctors prescribe azithromycin to pregnant women only when necessary, because its safety has not been proven.

Those with concerns about azithromycin in pregnancy can discuss them with their doctors. An obstetrician may have specific concerns about a particular pregnancy that might preclude the use of this medication. Patients should also be aware that if they have a history of miscarriages, or a high risk pregnancy, it may be possible to miscarry. If they take the medication and experience a miscarriage, they can request testing to determine the likely cause of the pregnancy loss. If no clear cause can be identified and azithromycin may have been involved, they can discuss the option of reporting the event to a database on adverse drug reactions.

Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a TheHealthBoard researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Learn more...
Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a TheHealthBoard researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Learn more...

Discussion Comments

anon948758

I was 15 weeks pregnant with a healthy pregnancy and took azithromycin 1 gram and the next day I lost my baby.

serenesurface

@ysmina-- Yep, azithromycin is one of the antibiotics that can be used during pregnancy. But I recommend avoiding it while you breastfeed because I don't think that's safe.

ysmina

@donasmrs-- I'm glad you shared your experience because I was worried about this. I've been prescribed azithromycin for a sinus infection and I'm in my first trimester. This is my first child so I'm scared and trying to be very careful. I would like to avoid medications altogether but the sinus infection is severe. I'm glad to hear that my baby will be safe on this medication.

donasmrs

I used azithromycin for a urinary tract infection when I was pregnant. My doctor actually preferred to give me something else, but I'm allergic to some types of antibiotics. I'm not allergic to azithromycin, so that's what I was given.

I didn't have any problems while on this medication. It cleared up my infection and my baby was born healthy. If I experienced the same issue during a second pregnancy, I wouldn't hesitate to use azithromycin again. I think it's totally safe, but it should not be used without doctor approval.

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    • Azithromycin is considered to be relatively safe during pregnancy, but women who have concerns should discuss them with their doctors.
      By: Dmitriy Melnikov
      Azithromycin is considered to be relatively safe during pregnancy, but women who have concerns should discuss them with their doctors.
    • A pregnant woman should always consult her obstetrician if she has questions about azithromycin or any other medication.
      By: Milissenta
      A pregnant woman should always consult her obstetrician if she has questions about azithromycin or any other medication.
    • Doctors prescribe azithromycin to pregnant women only when necessary, because its safety has not been proven.
      By: emiliau
      Doctors prescribe azithromycin to pregnant women only when necessary, because its safety has not been proven.
    • Azithromycin for acne is generally administered via oral tablets.
      By: Syda Productions
      Azithromycin for acne is generally administered via oral tablets.
    • Pregnant women should be routinely screened for the presence of any bacterial infection.
      By: Radek Sturgolewski
      Pregnant women should be routinely screened for the presence of any bacterial infection.
    • A bacterial infection can cause a pregnant woman to experience complications.
      By: Gajus
      A bacterial infection can cause a pregnant woman to experience complications.
    • Breastfeeding mothers should not take azithromycin.
      By: Hunor Kristo
      Breastfeeding mothers should not take azithromycin.