No I did not start using lemon juice until my last few flushes actually. I do like it, but for whatever reason, the grapefruit really vibes with me. I use lemon juice with my apple/ginger/garlic/olive oil concoction (as part of the 4 day prep). It seems to quell the nausea from the olive oil that I sometimes get. So orange and lemon huh? Maybe I'll get brave and try it sometime in the near future :) Thanks for the tip!