Jill:

   i believe the essence of the theory behind timing feeds is that in fact
the meication or metabolite will flow back from milk to blood....ther flow is
from greater to lesseer concentration.  this then can lead to the continued
breastdown adn excretion....

   additionally, the half life time become spent so the drug has
disapated....either in milk or blood but that no longer matters.

                    patricia