Given your rather impressive list of meds and side effects, it might be worth trying some non-drug alternatives.
You have probably already been told about the lifestyle changes that can really help blood pressure, such as the DASH diet, maintaining a health weight, reducing your sodium consumption, exercising, not smoking and not drinking alcohol in excess. If lifestyle changes are not enough, there are a few devices on the market that have been clinically proven to lower blood pressure.
Resperate is a device that works using music and special breathing patterns. It is FDA cleared and has a number of clinical trials to support it. Stress Eraser is a competitor that is a fraction of the price.
Zona Plus is a device that guides you though a specific isometric therapy. It was discovered by the Air Force, has been featured in magazines like the Harvard Health Letter and cleared by the FDA. Studies show that it may actually help heal the endotheial lining in your veins and change your vegal tone.
All of these products offer warranties, so they don't work you can return them! They also have NO SIDE EFFECTS!!!
Good luck!
