dont know.
i took creatine and ended up in hospital.
I am not saying creatine done it for sure...however it at least highlighted the problems to me.
It just doesnt filter the shit away. I had ultrasounds, dyetests, ureteroscopy (camera up ur dick) the whole lot. They coudl not say for sure. It happened when i just started training a short while.
I never knew i had kidney problems otherwise i wouldnt have taken it.
To this day i get severe sickness and pain in my kidneys from time to time. it sucks.