The bed height is irrelevant to gastric reflux – it the angle of the bed that matters. You can help reduce your discomfort while in bed by raising the top of the mattress. Place bricks or some other solid items beneath the top feet of your bed. The top of the bed will then be elevated, preventing any reflux passing up your oesophagus into your throat and mouth. But no – your bed height is irrelevant. It is the angle up from your stomach to the top of your throat that matters. You can also bulk up the pillow and your shoulders with extra pillow or bolsters.