<s>[INST] HI, I have been on 30 mg morphine for upper back for 8 months. 3 weeks ago I came down with what I thought was a cold and then a week later I went to urgent care where they told me I had bronchitis. I have had bronchitis in the past and have never experienced such bad chest pain. I am feeling better now and have noticed that I still am experiencing chest pain but it is only after I take a morphine pill. I don t know why this is happening. Can it be from the morphine or is it something else? [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Yes, morphine can cause gastritis and related chest pain. But better to rule out heart related chest pain because you are taking morphine since 8 months and morphine can cause cardiac complications. So get done ECG and 2d echo first. If both these are normal then no need to worry about heart diseases. Take pantoprazole tablet on empty stomach before taking morphine. This will reduce gastritis related chest pain. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>