Antiandrogen withdrawl

Questioning the Wisdom of Combined Androgen Therapy

One of the questions that often come up is how long a man should use an antiandrogen drug like Casodex along with a GnRH agonist like Lupron or Zoladex?  There is no question that an antiandrogen needs to be used before the first dosage of the agonist (Lupron), but should the antiandrogen be stopped or should it be continued along with the agonist (combining an antiandrogen along with the GnRH agonist is often referred to as a combined androgen blockade)?