I'm glad you're flushing away the stagnant energy in your liver and gallbladder...that's great!
It's quite possible that it was just the circumstances....maybe feeling sensitive after your first liver flush...that the lemonade made you feel ill? Could be! If the Master-Cleanse is something that is really right for you there will be a right time for it sometime in your life! Just wait and see. I think the timing reeeally has to be right, in order to have a great fasting experience.
The liver and the Bowel Cleanses are the most important cleanses of all! ....and drinking pure water and eating healthily after cleansing is the way to go~!