Gastroesophageal reflux disease (GERD) is common during pregnancy. The pathogenesis is a decrease in lower oesophageal sphincter pressure caused by female sex hormones, especially progesterone. The most common symptom of GERD is heartburn. Nevertheless, serious reflux complications during pregnancy are rare. In contrast to non-pregnant patients, GERD during pregnancy should be managed with a step-up algorithm beginning with lifestyle modifications and dietary changes. Antacids or sucralfate are considered the first-line on-demand drug therapy. If symptoms persist, any of the histamine-2-receptor antagonists can be used. Proton pump inhibitors are reserved for women with intractable symptoms or complicated reflux disease. Usually, heartburn during pregnancy resolves soon after delivery but little is known about the late sequelae or, respectively, an influence on subsequent pregnancies. Accordingly a prospective study (longitudinal cohort analysis) is currently underway.