Okay no Senna Thanks! How about Cascara Sagrada - I saw it on another message board? Is it okay during a cleanse? I'm confused now about killing the yeast while I am mercury toxic. Should I be attacking it if it is releasing mercury back into my body? The parasite cleanse is killing everything and I feel aweful - today is the worst day yet maybe because I also cleaned up my diet and there is no yeast to feed on. Am I doing more harm than good by killing the yeast or do I need to get it under control before chelating? This is so confusing.