castor oil flush

today i tried this flush
//www.curezone.org/cleanse/liver/castor_oil_liver_flush.asp


it was very soft and pleasant, I didn't produce many stones (with the HC I normally have produced plenty) but there was enough funky stuff in the toilet (whether coming from the liver or from the intestine) to assure me it was certainly worth it. It feels good also to be doing something with bowels while attending to the liver. I must confess that I'm biased in favor of castor oil, as I've seen its power in many occasions.

So the question is, why in the link above do they say not to do it more than once a month? as I would like to use it in the 15 days of pause of the HC, when I feel the liver getting congested, or alternate it to HC.