I Take Norvasc, Labetalol, Pravastan, And Cozaar For Blood Pressure,

I take Norvasc, labetalol, pravastan, and cozaar for blood pressure, A-Fib, A ruptured Aorta, and I have had surgery for mitral valve prolaspe. my blood pressure is in the range of 85-90 over 50-55 and I am having some dizness when I stand, also a cough that I can not control which drug should I reduce or omit.