Yes, there may be toxins, but you will not absorb them again, since their absorption is reduced. Yes, it’s not physiological, but eating all sorts of pills is also not physiological, but let’s say you drink them when you have a headache. The body can get used to some drugs, and they act on your body like minerals, and the minerals that you absorb from food are dumped and then they will begin to be dumped from your body without pills.
Read what pyroluria is. Also, many people treat herpes with urine therapy, then removing their chronic fatigue