Since you know the IV C is going to seriously freeup things it depends on how cellularly toxic we are to begin with as to how much of our toxic load will end up in our urine instead of our intestinal tract as the system is designed. Still as many propose, the reintroduction of evan unwanted compounds with UT tells the system something important, similarly to the principle of homeopathics . Tho if your toxins are unusual/unnatural and seriously debilitating it would give me a second thought about ut till things were a bit cleaner. Course Id want to fast or only eat fruit thru the protocol too.