Thank you Karen and Julie,
I wrote this on lactation before:
http://www.breastnexus.com/showthread.php?tid=10091&pid=36969#pid36969
Susan and I had an unfinished discussion about the danger of too much prolactin:
http://www.breastnexus.com/showthread.php?tid=8419&pid=35046#pid35046
If you follow the link to symptoms of hyperprolactinaemia, you will find this sentence:
"Because men have no reliable indicator such as menstruation to signal a problem, many men with hyperprolactinaemia being caused by an adenoma may delay going to the doctor until they have headaches or eye problems caused by the enlarged pituitary pressing against nearby optic nerves".
This means that taking herbs to increase prolactin is safe. What causes eye problems is not prolactin itself, but the adenoma that makes prolactin.