good evening. I’m sorry you are experiencing that metal taste. I’m Stage 3b so I haven’t tasted that yet but I can’t imagine how much gum I would have to eat to try annd get rid of that and I’m sure that’s not good for me either. I did find an article the editorial team wrote. I hope it helps to explain it and what can be done to help it. https://chronic-kidney-disease.net/symptoms Blessings, Cindy (Team Member)