Amlodipine
"I was prescribed Amlodipine for high blood pressure, and within six hours of taking the first tablet, developed severe tinnitus. I was advised to persevere with the medication, as the symptons often subside - they did not! After six weeks I ditched the dreadful Amlodipine, but still have tinnitus five weeks later, plus very unpleasant migraine type headaches ( something I had never had before ! )  Beware !"