MC & P&B

Quick question - instead of drinking a salt water flush and the tea - could I drink the P&B? I am trying to figure out how to incorporate the P&B into the MC? So far, I have drank 2 P&B and nothing has happened.

I have major constipation problems and have since at least the pregnancy of my first child (8 years ago).

Just interested in hearing what other people have done and what has worked for them.