Hemodialysis can sometimes be difficult if they try and take off too much fluid (which they almost always want to do). It is important to get him to an expert nephrologist soon. If his kidney failure is acute you want to do the right things to help potential recovery and not cause harm from dialysis. The first few days and weeks are very important! Also, I would be very careful about using any supplements or herbs. While your doctor may say okay I think from what you've described he is most likely not a neph expert. I know you think they help but there is no medical evidence they do and they can cause harm. Search for reliable medical sites to see if they support the herbs you mentioned. If you can't find medical evidence, I would suggest you not do it or talk to an expert.