Answer
It is not known whether permethrin is excreted in human breast milk, but because systemic absorption is extremely small and theoretically only a very small percentage enters milk, concentrations are unlikely to pose a risk to the neonate or infant.
Sources for this answer
- Permethrin 5% w/w CreamSandoz Limited · emc · SmPC §4.6 Fertility, pregnancy and lactation · Version 11Document updated
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