Levonorgestrel is safe to take while breastfeeding. Although small amounts of levonorgestrel may enter your breast milk, it won’t be harmful to your baby.[popover id=ref6]
If you’re worried, though, you can take Levonorgestrel immediately after breastfeeding and then avoid nursing for at least 8 hours. You can then use a breast pump in the meantime to reduce the quantity of the medication in your breast milk before your next feed.[popover id=ref1]