Question

I am a breastfeeding mother and i want to know if it is safe to use Benzathine benzylpenicilline? Is Benzathine benzylpenicilline safe for nursing mother and child? Does Benzathine benzylpenicilline extracts into breast milk? Does Benzathine benzylpenicilline has any long term or short term side effects on infants? Can Benzathine benzylpenicilline influence milk supply or can Benzathine benzylpenicilline decrease milk supply in lactating mothers?

Answer by DrLact: About Benzathine benzylpenicilline usage in lactation

: Limited information indicates Benzathine benzylpenicilline produces low levels in milk that are not expected to cause adverse effects in breastfed infants. Occasionally disruption of the infant's gastrointestinal flora, resulting in diarrhea or thrush have been reported with penicillins, but these effects have not been adequately evaluated. Benzathine benzylpenicilline is acceptable in nursing mothers.

Benzathine benzylpenicilline Side Effects in Breastfeeding

A breastfed 1-month-old infant with congenital syphilis developed a Herxheimer reaction 6 hours after its mother received 2.4 million units of Benzathine benzylpenicilline intramuscularly. However, the baby had also received 10 units of penicillin G at about the same time as the mother's injection. The reaction was possibly caused by penicillin in breastmilk.[2]

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