The stuff I took the last time, Fleet Phospho Soda, appears to have some class action lawsuit against it. I woke up with the TV on one night and heard one of those ambulance-chaser lawyer ads on. That stuff was nasty, but you only had to drink like 3 ozs of it.
I found some advice on the net:
Pretend that you hold in your hand the only antidote to the lethal virus that has been introduced by some foreign monkey into our country. You will die if you do not drink this glass within 10 seconds every 10 minutes. You may not stop, and you may not lose it into the kitchen sink. It is your only hope.