I had the same problem with the cayenne at frist. You will get used to it pretty quickly. I am on day 4 now and I have been adding a touch extra cayenne because I like it so much ^_^
Also, it is my understanding that it is best (if you can) to do both the laxative tea and the saltwater flush: the laxative at night to loosen, and the salt water in the morning to rinse it all out. Don't do the saltwater though unless you have some extra time in the mornings, you will need to be near a toilet for at least 90 minutes!