My dad aged 54 and is a chronic diabetic and recently underwent ampuatation of great toe due to osteomyelitis,,and his bp is fluctuating between 140/70 to 120/80,,,and he is put on statinz too is it necessary that he has to take some antihypertensivez to protect kidney function,,if so he is been adviced by a doctor to take telma 4o,,vl it protect the kidney?