I experience variuos fluctuations even using Benicar. My blood pressure had some for some reason risen to 170/101 two months ago and my primary doctor prescribed Benicar. Well, it reduce my blood pressure to the normal range, but it fluctuates to as low as 86/54 and up to 136/86. Along with this I have lightheadeness, dizziness, some breathing problems, some numbness in my hands and unsteady walking. What I would like to find out if this relates to heart trouble. I thought about scheduling a stree test and would like your opinion about all this. I am a male and am 88 years of age.