Budesonide use while Breastfeeding
Drugs containing Budesonide: Symbicort, Pulmicort Flexhaler, Pulmicort Turbuhaler, Uceris, Rhinocort, Entocort EC, Pulmicort Respules, Rhinocort Aqua, Rhinocort Allergy, Pulmicort Nebuamp
Medically reviewed on Nov 6, 2018
Budesonide Levels and Effects while Breastfeeding
Summary of Use during Lactation
The amounts of inhaled budesonide excreted into breastmilk are minute and infant exposure is negligible. When taken by mouth, budesonide is only about 9% bioavailable; bioavailability in the infant is likely to be similarly low for any budesonide that enters the breastmilk. Most experts consider oral and inhaled corticosteroids, including budesonide, acceptable to use during breastfeeding.
Maternal Levels. Eight women with asthma were using inhaled budesonide 200 mcg (n = 4) or 400 mcg twice daily (n = 4) by Pulmicort Turbihaler. Peak milk levels of budesonide of 168 ng/L and 335 ng/L occurred at 32 and 43 minutes after inhalation with the 200 mcg and 400 mcg doses, respectively. Average infant doses were estimated to be 6.8 and 14.2 ng/kg daily for the 200 mcg and 400 mcg dosages. A fully breastfed infant would receive a maximum of 0.3% of the weight-adjusted maternal dosage, assuming 100% oral bioavailability from breastmilk.
Infant Levels. Four infants whose mothers were taking budesonide 200 mcg (n = 2) or 400 mcg (n = 2) twice daily by Pulmicort Turbihaler. The infants had serum samples taken 1.5 hours (range 0.7 to 2 hours) after the first breastfeeding after drug administration and 2.3 hours (range 2.1 to 2.6 hours) after maternal drug inhalation. All had undetectable (<8.6 to 17.2 ng/L) serum budesonide concentrations.
Effects in Breastfed Infants
None reported with any corticosteroid.
Effects on Lactation and Breastmilk
Relevant published information was not found as of the revision date.
Alternate Drugs to Consider
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3. National Heart, Lung, and Blood Institute, National Asthma Education and Prevention Program Asthma and Pregnancy Working Group. NAEPP expert panel report. Managing asthma during pregnancy: recommendations for pharmacologic treatment-2004 update. 2004;1-57. http://www.nhlbi.nih.gov/health/prof/lung/asthma/astpreg.htm
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6. Falt A, Bengtsson T, Kennedy BM et al. Exposure of infants to budesonide through breast milk of asthmatic mothers. J Allergy Clin Immunol. 2007;120:798-802. PMID: 17825891
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