>>42564146Anything your kidneys filter out of your body winds up in your urine to be removed. By drinking urine, you are consuming these toxins that your body explicitly intended to remove. This can lead to kidney damage or disease as these organs need to work harder to handle the increased concentration of toxic substances.
When it comes to hydration, water, electrolyte beverages, and most other drinks are likely safer to consume than urine. There are no health benefits to ingesting urine; any other drink is likely to involve fewer health risks. While in small amounts urine is unlikely to cause harm, it will not offer benefits, either.