@nimblefoot Welcome to Mayo Clinic Connect. If I understand correctly, you are Stage 3A in kidney function, and would like to add creatine monohydrate to your supplements. While it may be a popular thing to do, here is what Mayo Clinic has to say about it: https://www.mayoclinic.org/drugs-supplements-creatine/art-20347591#:~:text=Although%20an%20older%20case%20study,kidney%20function%20in%20healthy%20people. As you can see, in normally healthy people there shouldn't be any issue, but showing a chronic kidney issue, you might want to rethink this avenue. What does your nephrologist have to say about adding this supplement? What is your reason for wanting to add this powder to your supplements?
Ginger