ditto on what ohiobuckeye said , i just had one done a couple weeks ago and do make sure that you can pick up the drink they day before it is easier to drink it at home ,i cheated and didnt drink all of mine but did get most of it down i fessed up when i went in the office and the nursr said i was lucky i had enough in me , the scan worked , i also was sitting in the waiting room waiting for my turn and this young girl had been there for a 1/2 hour and was sitting there in front of everyone try to drink her contrast !! i felt so sorry for her , the contrast was out of my system by the next day !!