question: my stomach has been bothering me lately my primary DR. has me on omeprazole 20mg Iv I have been taking that for years. I seen Him yesterday And he Told me to take 300mgs. of Ranitidine at bed time and pepto bismol 15 mins. before meals.I am on dialysis 3 times a week And lost a kidney to cancer last year do i have anything to wory about with thenew meds.