This will improve prediction of effective starting drug dosages for healthy elderly patients, as depicted in Fig tadalafil cialis from india Antibiotic prophylaxis Antibiotic prophylaxis is recommended for 1 Prosthetic valve or valve repaired w prosthetic material 2 history of infective endocarditis 3 certain congenital heart defects and 4 heart transplant with abnormal heart valve function AHA on IE from 9 2017