Just the idea that they would create pills for acid reflux really irritates me! Had you even heard of GERD before they invented the pills for it? It's a manufactured disease.
The problem isn't a chemical imbalance--if you eat a medium pizza and a large coke and then lie down, your intelligent body is going to try to vomit because it knows that lying down is a really stupid thing to do with a stomach full of food that needs to be digested.
OK, maybe you don't eat a medium pizza before bedtime--but you may nibble on things while you're watching TV and maybe have a beer or some other large drink. Still not a good idea.
Read the article on Suite 101 that talks about how to avoid acid reflux.
Take a deep breath,
Dr. Ron