Keflex blood pressure. . BALTIMORE (Stockpickr) -- The stock market is moving cautiously higher again this week, as the S&P 500 attempts a retest of the highs it made b. High Blood PressureI just woke up from a nightmare that has thrown me into a panic attack and shot my blood pressure thru the roof. . Clonidine (clonidine hydrochloride) is often used for high blood pressure. . . . . . Dilantin (phenytoin) is often . My . I NEVER have nightmares, but have taken Keflex on 4 or 5 . Some ... more