my father is a age 71, weight 41 kgs is a Cancer patient and has undergone radiotherapy almost about three months ago, and after that he is become very weak, he has paraumblical hernia also which doctors have suggested us to wait for the surgery the biggest problem he is facing is of stomach upset he has constipation many a times and when we give him lukeworm water empty stomach, and isabgol after dinner and then after few days he has loose stomach last weak he fell down and broke his nose and after consultation with doctor he gave my father antibiotic since then he is facing acidity and burning sensation, now antibiotic course is over and now he is still having acidity we have given him digene, omopi-D, and he is also have burping, we are really worried, please guide us