Well, it's already done, so I hope the answer is yes!! I had my plantar warts treated today and didn't even think to make sure it was safe while breastfeeding. My son is almost 3 and only nurses once AM and once PM, varies on the weekends. I'm pretty sure the following were used: Cantharidin and Imiquimod (Aldara). Does anyone have the Dr. Hale book to check, or have any experience with this? I'm sure I can hold him off if I need to.