Ramipril
"A 24 hour blood pressure monitored showed my average reading to be 158/95, during the course of the day my reading spiked over 200.  Within three weeks of starting Ramipril (starting on 2.5 then raised to 5mg) my readings have been 140/84, 130/80 and 144/84.  Ramipril seems to be working great, only negative is constant dull headache."