high blood pressure
"Seems to work for everyone but me.  Quality of life was seriously affected by the on-going dizziness from this product (20mg). Elevators left me weak-kneed and staggering at work. Daily descending stairs also a vertigo nightmare. Blood pressure can easily go into 214/105s in emergencies, so I would like to find something to reduce those numbers, without the extreme dizziness. I work in a psychiatric setting, so I have to be alert and to move quickly without falling on my face. I didn't notice any appreciable drop in blood pressure either, with numbers still in the 170s most of the time."