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Tecfidera and Breastfeeding

The manufacturer of Tecfidera (dimethyl fumarate) recommends that women use this drug with caution while breastfeeding. Although no studies have been done to determine if it passes through breast milk or if it would harm a nursing infant, the medication may pass through breast milk to some extent. Side effects in a nursing child could include diarrhea, poor feeding, and vomiting.

Can Breastfeeding Women Take Tecfidera?

Tecfidera™ (dimethyl fumarate) is a prescription medication used in the treatment of relapsing forms of multiple sclerosis (MS). It is unknown whether Tecfidera passes through breast milk. Therefore, if you are breastfeeding or planning to start, talk with your healthcare provider before taking this medication.

More Information on Tecfidera and Breastfeeding

No studies have been done on Tecfidera in breastfeeding women. Therefore, it is not known whether the drug passes through breast milk or if it would harm a nursing child. Based on the properties of the medication, it could be expected to pass through breast milk to some extent.
When Tecfidera was given to rats throughout pregnancy and during breastfeeding, the drug increased the risk for death, reduced body weight, and delayed sexual maturity in the baby rats. It is unknown how these effects apply to humans. Lower doses also caused brain and behavior-type problems in the baby rats.
Many medicines pass through breast milk. Until more information is known, it is not unreasonable to assume Tecfidera may pass through breast milk. Because of this potential risk, the manufacturer recommends it be used cautiously in breastfeeding women.
If your healthcare provider recommends breastfeeding while taking Tecfidera, make sure to watch for any possible side effects in your nursing child. Such reactions may include but are not limited to:
  • Flushing (redness, warmth, itching, or burning sensations)
  • Diarrhea
  • Nausea and vomiting
  • Poor feeding
  • Unexplained crying
  • Rash.
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Tecfidera Medication Information

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