Sit upright
Loosen tight clothing
Slow your breathing
Swallow a few times
Sip still water slowly
Avoid carbonated drinks
Avoid chewing gum
Avoid drinking through a straw
Stop eating for a few minutes
Take a short walk
Try a gentle belch
Breathe in through your nose and out slowly through your mouth
Avoid lying down
If you have heartburn, take an antacid if normally safe for you