My endocrinologist said they had not heard of neuropathy as a side effect. I had my calcium levels checked and it was not high since taking the drug, it was actually much lower than normal for me. I am so confused as to what this drug does to calcium levels and I would imagine it's different for everyone due to your calcium intake, metabolism, etc. What I hear from others and what I research myself I find all different answers as to what causes what. It's not helpful that most drs don't even know.