I've never taken supplements. My nephro said she didn't believe in taking any - regardless of kidney disease - unless blood tests prove the nutrient is out of normal range. Mine are all normal.
However, I have osteoporosis which - like everything else it seems - needs therapy that is in conflict with CKD treatment. Kill my kidneys or break my bones from sneezing. Lovely choices.
It is vital that each time any medical person says you should do anything, take something, or have any procedure that you say LOUDLY "I have kidney disease; how involved with my kidneys be in this therapy?" at least 3 times and until you see them really think about the kidney impact. The 1st few times, they usually do a "yeah yeah" and blow past the caution.
Those who think they have no time for a healthy lifestyle will sooner or later will have to find time for illness.