Scientifically speaking the modern science does not consider urine as a healthy drink in any respect. At the same time the naturopaths advocate its use and practically demonstrate it by drinking in public. There are instances in the history where people had been taking it based on some belief or as a doctrine proposed by some influential people. For example in ancient Rome people believed that the urine from Portugal could cleanse their mouth and whiten their teeth. Many naturopaths would support that view and tell that it is a perfect medicine. Naturopaths strongly believe that the urine is beneficial in many ways like healing wounds in the mouth, improving eyesight, replacing lost nutrients, boosting the immune system, supporting thyroid related health etc.
Factually speaking, urine is a waste and would contain many unwanted chemicals already rejected by the body. So, from scientific point of view it is not recommended in any form and is not be used either from human or animal source. If we analyse the urine then the average one day quantity of it contains about 25 gram of urea, 10 gram of Sodium, 3 gram of phosphates, 1 gram of uric acid, 1.5 gram of creatine and traces of albumin (a protein). In addition there are small quantities of some hormones and chemicals which could not be harmful for the body but such a small quantity in fact may not help much when urine is consumed by a person.
It is also to be noted that if a healthy person with a good immune system takes and consumes urine due to his good health it may not affect him much and people might think that as the good affect of the urine. This type of misleading things often happen in the body. In other cases there is a danger of infection, dehydration and electrolytic imbalance. Further, there are many bacteria in the urine and those can do a lot of harm to us. Some people use urine as an emergency source of water in case of some disaster but it can not be made as a normal practice.
Knowledge is power.