That's the problem with naysayers of things they don't understand ,if they didn't learn it in grade school or high school it can't be true.
The amino acids in urine help the liver recover from the work intensive process of making amino acids to allow it to heal and help it function better enabling it to supply the rest of the endocrine organs, pancreas the adrenal gland etc. etc.. Its not difficult to understand, you just have to escape the box you've placed yourself inside of.