I don't know the answer to your question, but here is an article from cancer.gov about steroids and multiple myeloma. http://www.cancer.gov/newscenter/newsfromnci/2007/multiplemyelomadexamethasone But since this is a medical question you might want to consult with your dad's physician so s/he can explain the effects of steroids on kidney function.
Thankgoodness started followingabout 4 years ago
Thankgoodness asked a questionBone Cancer
Does anyone know anything about the effects of steriods on Myeloma?