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Cordarone does pass through human breast milk in amounts large enough to cause potentially serious side effects in an infant who is nursing. Therefore, the manufacturer of the drug recommends that women not breastfeed while taking Cordarone. Also, this medication can stay in your body for months after stopping it, so discuss the potential risks with your healthcare provider.

Can Breastfeeding Women Take Cordarone?

Cordarone® (amiodarone hydrochloride) is a prescription medication used to treat a certain type of serious irregular heartbeat known as a ventricular arrhythmia. This medication passes through breast milk. Cordarone has the potential to cause serious side effects in a nursing infant and is generally not recommended for use while breastfeeding.

More Information About Cordarone and Breastfeeding

Studies have shown that Cordarone passes through breast milk in humans in amounts that are large enough to potentially cause serious problems in a nursing child. There are a few reported cases describing the use of the medication in women who were breastfeeding. In five cases, problems were not reported in the nursing infants. However, in one case, the nursing infant developed symptoms of hypothyroidism (an underactive thyroid).
Cordarone contains a significant amount of iodine, which can affect a nursing infant's thyroid activity. Iodine has been reported to cause hypothyroidism (an underactive thyroid) in nursing infants.
In general, it is recommended that women who take Cordarone not breastfeed. Because the medicine can stay in the body for months after a person stops taking it, breastfeeding is also generally discouraged in women who have recently taken Cordarone. If your healthcare provider decides that it is okay for you to take this drug while breastfeeding, your baby's heart and thyroid should be monitored to make sure that no serious problems occur.
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Last reviewed by: Kristi Monson, PharmD;
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