I have been having severe drop in blood pressure, and in about 3 hours it will return to normal. It has gone as low as 74/47. I have no idea why but it is so debillitating that I don't drive. Anyone know anything about this. Oh, I had high blood pressure for 20 years, controlled by meds and now all of sudden it drops in the mornings and some in the afternoon. My Dr. lowered my meds and I am taking that lower dose every other day. HELP!!