Soda,
I went off my meds a while back when my pressure was 140/90 on my meds (pre-biking). I thought the doctor was going to kill me before I could kill myself. My pressure went to 210/120. Needless to say I'm on my meds and will never pull that stunt again. In November I went to the Doctor, pressure 124/84, the lowest in years.
Take your meds, do what the doctor says, stop worrying about the pressure, you doing more harm than good.