Ranitidine
"I have had gastritis for a couple years now and my doctor prescribed this for me just to see if it would help me with all the acid in my stomach but it actually did the quite opposite. It made my stomach burn really bad! I tried it a couple more times thinking I just needed to get used to it but it burned more each time. Everyone reacts differently, but I found that promethazine an metoclopramide worked best!"