So often The Master Cleanse produces induced regularity that does nothing to ease constipation problems when the fast is ended. In some cases the problem is worse, at least temporarily. I would suggest you first try some fresh ground flax seed. With this you get fiber, a lubricant and healthy oils. Try 1-2 tablespoons twice a day and keep drinking the water. The good thing about flax is that it is not a stimulant or a flush, it just gives bulk and lubrication. If you feel you do not want to add fiber, then try soaking whole flax seeds in warm water for a couple of hours, the seeds will expel their mucoidal goo and the water will thicken to a gel. Strain out the seeds if desired and stir a tablespoon of the flax goo into a cup of water, juice, or an apple cider vinegar and raw honey drink. Take twice a day. Give this at least a week to see if it helps.