I AM 86 YEARS OLD,148 WEIGHT, 5.6 HEIGHT, HAD CORONORAY BYPASS 10 YEARS AGO, MY HEART FUNCTION IS OK, MY PROBLEM IS THAT I FEEL WEESPACIALLY WHEN WALKING, I RATHER DRAG MYSELF WHEN GOING OUT FOR SHOPPING ,MOST OF THE TIME I FEEL SLEEPY DURING THE DAY, I AM A RETIRED PHYSICIAN (FOREING GRADUTE), I AM TAKING GENERIC OF COZAAR 100 MG, NORVASEC 5MG, ASPIRINE 81MG, LIPITOR 10MG,CALCITROL 0.25MCG 3 CAP. PER WEEK (FOR MY PARATHYROID HYPERPLASIA), PROTONIX DR 40 MG, COQ10 200MG , VITMIN D-3 5000 IU , MY ACTIVITY IS BESIDE TO TAKE CARE OF MYSELF I HAVE TO TAKE CARE OF MY DISABLED WIFE AND SON TOO. I WILL APPRECIATE YOUR ADVICE E.A.