http://forums.worldofwarcraft.com/thread.a...p=1#post4055618

As Sylvan stated, we do plan to make a change to the way the alchemy created flasks work so that their effects persist for the full duration of time, regardless of whether or not a character dies while under its influence. This should make it more desirable for players to gather the ingredients necessary to produce various flasks for both themselves and others.

Finalmente B)