Get your BP under control.
Check it several times to be sure what you are seeing is real. Sit with both feet on the floor, and relax for about 5 minutes befoe taking a reading.
Olive leave extract, a couple of capsules, up to once every four hours will trim 15-20 points.
As mentioned, most of us don't get enough potassium. Bananas and potatoes are good sources. The pills contribute only a tiny bit to what you need.... 99 mg of a 1500 mg daily need. It's that way because too much potassium chloride at one time will kill a person, or so I've been told.
Your NP is a better source of advice.