I have a question about the epsom salts too...

My husband went for his first colonic yesterday. it went VERY well. but he was asked by the hydrotherapist what he was doing for his flush. when he told him he became very concerned. (he was following dr.clarks flush to the tee) he told my husband that Epsom Salts reek total havic on your system and that it is not needed to remove the stones. he reccommed the apple juice flush and then on the 3rd night the OO/GJ. so now we are alittle baffled. i know he HATED the epsoms and even though drinking it through a straw, felt as if he might throw up. but he was able to get through it. but we dont want to be doing any ill effects either. any opinions?
Jen