Hi, my father is 80 ears old and complaining of stomach ache. He has been slightly constipated so last friday took him to doctor, and was told to use miralax. He was not eating how he normally eats, and even after doctor visit he feels better, but has not regained his full appetite. This morning he says his stomach hurts, and his urine looks like it has blood. He is 5ft11in, 220lb., and has had stroke, and heart attack. Also has pacemaker.