Honestly I have just felt better after my flushes but I have been on a healthy vegan diet for a while. Before I made my flush I just took antiparasyte pills that a doctor told me which I know is very toxic. As of right now I know in the Clark book there is an antiparasyte program based on Black-Walnut s, woomword and cloves and can be purchased in capsules. And for maintenance you just take the same but only one day a week.
Technically the more unclean you are the more of a healing crisis you may get. Cleaning your bowels before and after are a must, you really want to have good bowel movements before you do the flushes, you want to have taken an antiparasyte and you also want to make a kidney cleanse (although not extremely necessary if you do not have a history of kidney problems), it is recommended to do a kidney cleanse after the second or third flush. I drink a lot of water after my flushes and also go out jogging to sweat. (Sauna are another option).