I read the following articles from Cleveland Clinic, Mayo Clinic, and Mt Sinai that all say it’s safe and effective, so I would take your physicians opinion with a grain of salt.

This is from the Mt Sinai article though: “Creatine appears to be generally safe, although when it is taken at high doses there is the potential for serious side effects, such as kidney damage. High doses may also stop the body from making its own creatine.”

https://www.mayoclinic.org/drugs-supplements-creatine/art-20347591#:~:text=Overview,in%20synthetically%20made%20creatine%20supplements.




https://www.mountsinai.org/health-library/supplement/creatine#:~:text=Creatine%20appears%20to%20be%20generally,from%20making%20its%20own%20creatine.