Question

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

Answer by DrLact: About Benzathine Penicillin G usage in lactation

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

Benzathine Penicillin G 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 penicillin G 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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