I am on several meds for Wegeners granulomatosis...Coreg, Mepron, Losartan, Amlodipine, Synthroid, calcium, Vitamin D, etc and was concerned about interactions of these drugs. I am sleep deprived now...2=4 hours a nite, food tastes like cardboard and I am holding fluid in the legs. Have stage 3 kidne failure. Am about to st art immunotherapy in about a week and am on large dose of Prednisone. Do NOT like the way I feel. Is there danger in all these drugs?