I have IBS-d and a small hiatus hernia. Due to both of these I get heartburn/dyspepsia, particularly at night and first thing in the morning.
Just discovered chewing gum works wonders. Day four of half hour chewing at night - the discomfort and nausea have disappeared. Can't believe it! Wish I could find something that worked like that on my diarrhoea!
Hope this helps someone out there. x