I have been taking toprol er for 1 week for new onset hyptension. We started with 12.5, then 25, then 37.5 then 50 2 days ago. My systolic would go down initially after taking at 9pm, ok in the morning, but then would go up starting at 9am and be 180/70 as the day went on. Also, itchy,headache, nausea. MD just switched me to Lisinopril 10mg today and start daily tomorrow. Thoughts?