You shouldnt be doing the P/B shakes while on a parasite cleanse IMHO. You should also remember most parasites are microscopic so you wont see 90% of what you kill. What you will see in the toilet will be the worms and sometimes just the worm casings.
I dont believe in doing the P/B shakes while on the Master-Cleanse either. I guess its just the modern way to try to get everything done as quick as they can. I think people should do 1 cleanse at a time and then move on to the next. Start with a Liver-Flush and then do a parasite clease. When your done with the parasite cleanse do another Liver Flush and move on to a bowel clease or the MC. I see people mixing like 3 or 4 cleanses at once,i guess they think they will get it all done in a month or so. It takes years and years to clean your body once you start so just take every thing slow.