I was diagnosed with achalasia 2.5 years ago. I had the surgery to open the muscle to my stomach. Because my esophagus muscles no longer work-and my esophagus is like a funnel. I m wondering how much liquid does a normal esophagus hold? I try to drink and eat small amounts. The drink is to wash down my food. But sometimes I feel like my liquid is not flowing into my stomach fast enough. It is like pouring fluids into a bottle thru a small hole and it sometimes will bubble back. Am I right? And should I limit my fluids to a certain amount (that is what I am trying to determine) at one setting.