Is Interferon Gamma-1b safe while breastfeeding?
Here is what NIH LactMed, the U.S. National Library of Medicine's authority on medicines and breastfeeding, reports about Interferon Gamma-1b. This is a summary of that source — not our own verdict.
Effects on the breastfed infant
Relevant published information was not found as of the revision date.
Effects on milk supply
Relevant published information was not found as of the revision date.
Levels in milk
Maternal Levels. Measurements of the colostrum 6 mothers of preterm infants found an average of 2 ng/L of interferon gamma; two mothers of full-term infants had an average of 2.2 ng/L. At over 30 days postpartum, milk of 3 mothers of preterm infants contained 2.6 ng/L of interferon gamma; the milk of 28 mothers of full-term infants contained an average of 0.7 ng/L.[ 1 ] Infant Levels. Relevant published information was not found as of the revision date.
“No published information” means the studies do not exist yet — not that Interferon Gamma-1b is known to be harmful, and not that it is known to be safe. Your prescriber or pharmacist can weigh your baby's age and whether a better-studied alternative would do the same job. Worth asking before stopping a medicine you need.
Source: NIH LactMed (National Library of Medicine).
Educational summary of an authoritative source — not medical advice. Never start, stop, or change a medicine while breastfeeding without confirming with your doctor.