Hales is the most respected site for drugs and breastfeeding. A second one is safefetus.com which has info during pregnancy and breastfeeding. Like Hales, it has it listed as 'compatible with breastfeeding'.
That said, if you want to minimize the amount your baby gets, feed your baby immediately before or immediately after taking a dose. Then hopefully she won't need to eat again for at least 3 hours, so she won't eat when the drug concentration is highest in your body and thus she'll get a lower dose. I know newborns are unpredictable with eating patterns, so it might not work great, but it's the best you can do.