Can Metoprolol Cause Low Appetite And Heartburn?

Hello, I am currently on Sucralfate and Protonix for gastric problems, but they have been no help. I cannot even tell I am taking any medication and symptoms are worse than ever. My Dr has not yet ordered any blood work or an upper GI and I ve seen him 3 times for this problem. My stomach is so distended, I look like I am pregnant and I cannot even wear some of my clothes anymore. I have little appetite, severe heartburn and a burning pain in the center of my stomach that comes and goes. This has gone on for about a month now. I belch all throughout the day, even on an empty stomach. I find that I feel better with nothing on my stomach. I have been on Metoprolol for a few years also. Could this have contributed to my problems? I was fine one day and I had all these symptoms the next. Could there be something else wrong? Bowel movements seem normal and I do not ever consume caffeine, alcohol or soft drinks of any kind. I do not smoke.