HIGH Blood Pressure--What about Viagra?

Hi Everyone.
I had surgical menopause in 2002 and even though I tried Climara patch, estrogen creams, bioidentical sublingual, nothing made me feel better than the Premarin 1.25. However, its been 7 years and my blood pressure is going nuts! I dieted, cut the bread, wheat, added more green veggies, and dropped cholesterol from 240 to 190, weight is down to 155 from 172 (I'm 5'9"), and even though I'm the healthiest person I know I STILL CAN'T get the darn HBP down. Over the past year, my doctor has prescribed Atenolol, Toprol, Diovan, Tekturna and ALL of them raise my blood pressure after taking them for a week (up to 210/110)! So I can't tolerate the meds, at least the ones I've tried so far. ALSO I tried Lasix, and that helps temporarily - gets it down to 164/90 in a few hours. But has anyone tried Viagra or L-Arginine to reduce their blood pressure? They are supposed to increase nitric oxide production in your system, which in turns vasodilates. Anyone tried it? Do tell....