I'm a huge fan of Yerbamate (Royale is the best!) too. It's an excellent "bowel-mover" and energy booster whenever needed.
LOTS and LOTS of water (or herbal tea, etc) is also really important.
Another thing that would really help guarantee a bowel move is Dr. Schulze
(sp?) Intestinal 1 formula. Take three of those before bed and...in the morning, you WILL go. :) If not, take four or five the next evening--whatever it takes for it to WORK. Once you find the right number for you, it WILL work! The bottle comes with a LOT of pills, enough to get you through a full parasite
cleanse, for sure, so it's a good deal as far as money goes.
I would find something that gets your colon regular FIRST, and then start back on the parasite
cleanse and do a good *thorough* cleaning (maybe even get a new one, so that you can get a full cleanse in just to make sure everything dies).