Darnit Xantar! Dont make me think! j/k
Well I really beleive that they should not be punished. For a numbe of reasons.
Number one: This is sickness. This isnt stabbing to death or anything like that. This is natural sickness. Refusing to take medication is in my opinion, a pretty stupid idea, but I can see other peoples points if they decide not to. It's like having a second hand car. There will probably be dodgy parts in it that will break down after a matter of time, but its your decision wether you fix them or not. It is the parents right do refuse or accept drugs.
Number two: To understand the religious beleifs, you have to look at it from a certain point of view. I wont bother explaining it, because id be here for hours.