Lisinopril
"Because this works for some I will not say it is a bad medication. It did bring down my blood pressure, however, for the week I took it I could not sleep more than an hour or two at a time. I have both a pulse ox meter as well as a BP meter and started keeping close watch and found that while on Lisinopril my resting pulse went very low. It was 44 at one point and rarely went above 70. My Dr was not concerned because he said that it did not stay in the low range, however, in my conclusion I believe that I was not sleeping because my pulse went too low and I was forced to wake up in order to get my resting pulse to raise enough to keep me alive. After stopping the medication my resting pulse went back up to its normal rate of around 60-75."