Since I have taken this medicine I have had elevated blood pressure, dizziness after extended periods of strenuous activity, and a continual groggy detached feeling. I am a young man and have never had any health problems and until I started reading some of the stories about others on this drug I believed there was a major health problem. I have also had trouble sleeping and resting when i do sleep which leads to irritation and the groggy, hazy feeling that I have.