Antibiotics Home > Macrobid and Breastfeeding

A commonly prescribed antibiotic, Macrobid (nitrofurantoin monohydrate/macrocrystalline) is considered safe for most nursing women and their infants. Although a small amount of the medicine does pass through breast milk, this typically doesn't cause any problems for the woman or the nursing child. However, not all breastfeeding women should take Macrobid. Talk to your healthcare provider to make sure this medication is right for you.

Is Macrobid Safe for Breastfeeding Women?

Macrobid® (nitrofurantoin monohydrate/macrocrystalline) passes through breast milk in humans; however, it is generally considered safe for use in breastfeeding women, except in a few circumstances. If you are nursing a child, you should talk with your healthcare provider before taking Macrobid.

What Does the Research Say?

Studies have shown that Macrobid passes through breast milk in trace amounts. However, this does not seem to be a problem for most women or their infants.
There are a few potential problems, though. Like all antibiotics, Macrobid can disrupt the normal "good" bacteria, which can lead to diarrhea, thrush, or other problems. This could occur in an infant exposed to Macrobid through breast milk.
Macrobid and other forms of nitrofurantoin are some of the most commonly used antibiotics to treat urinary tract infections in breastfeeding women. However, this drug should be avoided if you are breastfeeding a newborn (one month or younger) or if your child has glucose-6-phosphate dehydrogenase deficiency, as exposure to Macrobid could increase the risk of hemolytic anemia (destruction of red blood cells) in such children.

Talking With Your Healthcare Provider About Breastfeeding and Macrobid

You should discuss breastfeeding while taking Macrobid with your healthcare provider. Each woman's situation is different, and you and your healthcare provider understand your situation best. After considering what you want and expect, as well as your current health situation, the two of you can make a shared decision that is right for you. In general, Macrobid is considered safe for nursing women and their infants.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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