it's a good idea to do a Liver Flush before and after the MC... it's not always necessary, but the Master-Cleanse is very trying on the liver, because you are not taking in any fat (good oil like olive oil) that the liver needs... and the Master-Cleanse tends to promote liver stone formation... so perhaps your gf should've done a Liver Flush before embarking on the MC.... she should look into doing one after the Master-Cleanse at least.. there's a wonderful Liver-Flush forum here on curezone... read as much about it as possible first!! good luck!!