Gosh sakes, Zoe, I'm glad you put this in! This is kind of scary really - I like the Master-Cleanse so much I want to do it regularly. My husband is away now for my first one but if BC is less effective on MC, that could be very bad for when I want to cleanse later in the year. We don't want an unplanned pregnancy - YIKES!
I wonder if there's information on this or other's experiences with Master-Cleanse & Birth Control? (particularly the pill)