Travelwedge (a light weight inflatable bed wedge) is the #1 solution for sleeping with your head raised wherever you sleep. Paid 90USD and worked great for me when I was travelling. Comes with storage bag.
The Full-Size Travelwedge can be used in many different ways: Under your mattress, on top of your mattress, on the floor, camping or anywhere you are sleeping.
According to WEBMD "If it's not controlled, acid reflux or GERD can result in serious problems, including esophagitis, esophageal bleeding and ulcers, Barrett's esophagus, strictures, and an increased risk of esophageal cancer."
Sleeping with your head raised is the quickest and easiest thing you can do to help control your acid reflux symptoms.
TravelWedge is made from high quality PVC Can be inflated with included pump or by using a hair dryer on "cool setting" Quickly and easily deflates for travel Packs down to the size of a folded dress shirt