Reflux Oesophagitis Losec is used to treat the symptoms of reflux oesophagitis or reflux disease in adults and in children. This can be caused by "washing back" (reflux) of food and acid from the stomach into the gullet (oesophagus). Reflux can cause a burning sensation in the chest rising up to the throat, also known as heartburn. Losec is also used to help stop reflux oesophagitis coming back or relapsing.
