I generally do only 2 P&B shakes per day (1 tbsp Bentonite clay mixed with 1 tsp pysillium husk/seeds).
Just to let you know Here's My Experience: If you get any cramps (like me) in your sides (intestine/colon area) this could be a tearing of the mucous from the intestinal wall. This can be painful, but in the long run worth it. Better out of you than in you!! If this happens stop the shakes for a week and drink aloe vera from your health food store as it will help to heal the area.