Question

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

Answer by DrLact: About Penicillin G, benzathine usage in lactation

: Limited information indicates Penicillin G, benzathine 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. Penicillin G, benzathine is acceptable in nursing mothers.

Penicillin G, benzathine 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 Penicillin G, benzathine 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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