liver flushing--don't quite understand

If I'm doing the alkalizing drink with a pinch of epson, and I'm taking a pinch with meals, do I need to do an OO/grapefruit liver flush?

It seems I've been told YES and NO. Could someone explain one more time? And is alkalizing cleaning my kidneys or do I need to do something special there?

a friend insists that I can't get well without a full fledged liverflush, and I'm concerned that I'm not healthy enough for that

thank you,
pj