Andreas Moritz is the only one who suggests colonics. Very few people over the years did colonics because most people did The Clark Flush .
I have done 100 flushes over many years but never did a colonic, it is expensive but for most people it is not even available.
I usually skip the supplements on the day of the flush.
And for me the Epsom Salts (magnesium sulfate) cleans me out. The next day I always have butt pee. I take 1 tbs ES in a cup of water 4x.