I've had great luck doing the O-W Company parasite herbs before my liver/gallbladder cleanse - Cloves, Wormwood and Black-Walnut green hull tinctures. They have a 60-day program. I did a cleanse after the first week and got ok results, but the one I just did after 3 weeks was the best ever of 6 cleanses. I also do a Dr. Schultze liver/gallbladder cleanse the week before the Hulda Clark one, so I'm mostly drinking juice from my juicer and his detox tea (and 48 oz. of apple juice a day). This time I got out around 3 cups (!!!) of bright green gravel. I'd been feeling a pressure in my gallbladder before that, and it's gone now.