I AM 65 YRS OLD , I HAVE BEEN DIAGNOSED WITH COPD IN THE RECENT DAYS, THE DR. PERCRIBED TO ME LOSARTAN POT 50 MG 1X ANDHCTZ TABS 25 MG. I ALSO HAVE HIGH BLLOOD PRESSURE , A SALT FREE DIET HAS BEEN RECOMENDED, CAN YOU HELP ME BY EXPLAINING ALL OF THIS, PLEASE