hi as I put in the 30 steps, I feel this is the best brand as it is specially made and contains both mushrooms and several other supporting factors.
also more info on the other link
I once asked them did they ship to other countries like Australia and she said to email her at the site and ask about shipping rates etc.
I would definitely get it for your dad. You might find it cheaper elsewhere but get the name (quantum kidney complex) and goggle search it and make sure it is the same thing/label.
I did a little research on the mushrooms and it seems that like the previous poster, people are seeing positive results on a number of aspects of their health and often rather quickly.