Chlorpromazine is a major tranquilizer and antipsychotic, the first of
this class, incidentally.  It works to increase milk supply in the
same way as domperidone and metoclopramide.  However, it has the
possibility of major side effects as well, and for that reason,
domperidone would be far better.  Chlorpramazine is called Thorazine
in the US, Largactil in Canada.

Jack Newman, MD, FRCPC