Why? You said you are following the Clark foundation, what do they say. Milk thistle is usually taken after the liver is clean by doing liver flushing.

Hi
What type of bowel cleans are you going to do? Something that comes in a box from the store or professional colonic irrigation? If the latter you may want to ask advice from an experienced practitioner like Nadine Marchuk who practices out of Reno NV as Serenity's cleansing. As far as taking lots of supplements like you list here, my comments are that these herbs are great in the correct doses and at the right time. but it is better to clean the bowels first. You do NOT want to put more toxic material in there. SO Cleanse first. A proper liver detox is not a pleasant thing to do so wait until the gut is cleaner and has re-established proper bowel flora Remember you WEED before you SEED ie cleanse than probiotics than a liver cleans if needed.
Although most enemas and colon cleansing is safe if done properly I would advice you to check with a suitably qualified practitioner.
Good luck an best of health, naturally.. Leo A. Bongaards ND MH Dip Ir.