As I write this I am back to feeling well-managed. However a few days ago I bought a wrist cuff blood pressure device for my wife and became quite upset with my personal b/p measurements. The machine was about 35% high in its readings, of course. but until I visited a phaarmacy and had my b/p measured by a reliable device I was very concerned. I was so concerned that I had stopped the 1/2 tabs of dipenhydramine that I normally take along with a 1/2 tab of sinemet and a 250 mg gaba-plex capsule, because I knew that prolonged use of diphenhydramine sometimes reduces flow through the vessels. For the 2 days or so that I discontinued that component of my regimen I was sorely struck down in quality of life. Today I am convinced that for me, diphenhydramine used in small regular doses is an important therapeutic step to continue in order maintain my day to day functioning. Feeling better now and the b/p remains normal.