I've never done a liver/gallbladder flush; to be honest, I'm not sure if the flushes work the way people say it does.
I think there's a connection between the candida and parasites. Maybe the parasites weaken the immune system enough to allow candida overgrowth to occur. So once you start eradicating the parasites, the immune system is no longer suppressed and other things like candida and bacterial overgrowth start coming out.