How did you find out there was a 30 min timer on this thing?  What a pain - I got it once and it expired, but I thought I had accidentally destroyed it, so I just went and tried again, and the same dang thing happened.  There really ought to be a quest timer, or a mention of the 30 min time limit in the quest description.

I mean, the Apothecary does say to hurry, but most quest givers do >:(