No. The Master-Cleanse protocol is a strong cup of herbal lax tea the night before the swf, and if you can't do it have another cup in the morning.
However, as a serious colon cleanser and frequent extended MCer I find this routine harsh in the long run, and often inconvenient (the swf is not the commute!). I use a plain water enema as a substitute for either/or whenever I need to. In case of a detox crises, many times I have had a plain water enema stop it dead in its tracks.
There is also one school of thought that says salt cleanses encourage mucous buildup in the colon, absolutely a bad idea for me! Still, I do it occasionally as it is an excellent flush of the entire digestive system.