How can i have reflux while on pantoprazole?

Acid block not equal: So acid blockers like Omeprazole and Pantoprazole due block acid production but not the fact that there is 'stuff' in your stomach. This 'stuff' (stomach juices, food, etc), still potentially can reflux back into the esophagus. Sometimes things like motility agents (that help things move south instead of norht) are more often used for refractory reflux.