Arnaud,

  There is some confusion on the use of fu zi while women are breastfeeding.  Some say it is perfectly okay as long as the condition calls for its use.  However, many books state, with some hesitancy, that the baby may suffer from the ingestion through breast milk.  I cannot seem to find anyone that really knows what they are talking about in this case, so I bring it to  you.

Thank you,

Chris Powell