Feverfew, in its natural state should not cause any problems with breastfeeding. What is Tanacet? Is this a synthetic version of the natural plant? I always recommend using the original plant whenever possible, as it reacts better in the body than a synthetic substitute ever could. If your client is having difficulty with migraine headaches, I would suggest that she use what I call "Migrainease" which is a combination of Feverfew and White Willow Bark. It successfully stops migraines (especially when taken in the early stages of one) in many of my clients. If you need further information or have questions, don't hesitate to contact me by e-mail or at my 800#. Hope this information helps! >Does anyone have any information on the use of feverfew (now available as >Tanacet) for migraine prophylaxis in a mom who is nursing a 14 month old >from 3 to 8 times a day? > >Karen Cunningham MD, CCFP London Wishing you health and wellness! Tami Karnes, Certified Herbalist One With Nature Reiki Practitioner P.O. Box 1724 Sedona, AZ Sedona, AZ 86339-1724 [log in to unmask] (800) 230-5166