My wife just got switched to Norvasc 5 mg once a day from metropolol succinate 25 mg. She just was released after a bout with pneoumonia and infection. Norvasc was just started. She has been on Metopolol for years. Should I be concerned of any reactions that may cause further problems. She is in advance stage COPD and uses oxygen 24/7. her blood pressure was high during her stay but we attribute it to the extremely high steroids she was under. she was sent home to titrate starting at 40 mg.