Senna Tea question

Hello all, i am on day 11 of the Master-Cleanse and im intending on going for 20+ days. My only concern is that the "Smooth Move" tea that i am drinking every night may cause dependence after the two week mark. I should go ahead and say that i have had bad constipation in the past and i am just trying to make sure that this problem isnt worsened. Would you all recomend me cutting the Master-Cleanse short, switching from the senna tea laxitive that i am drinking now, or maybe another suggestion? Thanks for the input. Tweet