I took it for years too. My kidney tests started coming back bad. Doc told me to stop taking it and the numbers improved. Some will say that creatine changes into creatinine that is used to measure kidney function and nothing to be alarmed about. It did alarm me so I stopped. If the kidneys are involved in filtering out creatine I didn't want the extra load on my kidneys. Creatine also made me retain water. It is the only supplement I ever used that worked though. The part that bothers me is that so many say it does nothing for them. The first time I took it my muscles got tighter and the pump was increased. No doubt I got stronger using it. It's just not worth the risk too me now. Use only German creapure brand. The stuff sold under so many brands is sourced from Chinese crap that you have to worry about impurities and even the creatine content.
THIS
if you are using creapure at a reasonable amount theres no health risks
ive been on creatine mono pretty much since ive started lifting, theres no need to loading or cycles. its something to take year round.
as i said if you are taking real creapure you will NOT have any kidney issue or subq water retention, it pulls the water inside the muscle
creatine also has numerous health benefits on the heart and brain.
for what it costs its stupid not to take it