Unless your consultant tells you otherwise, you should stop all stomach medication; proton pump inhibitors (Losec, Nexium etc) for five days before the test, H2 receptor antagonists (Zantac, Tagamet etc) for two days before the test and antacids (Gaviscon, Milk of Magnesia etc) for one day before the test. You should also stop all pro-motility agents (Domperidone, Azithromycin etc) two days before the test. You may take all other essential medicines, but if in doubt please ask us.
You should not have anything to eat for 6 hours before the study (from midnight if your appointment is before 12pm). You can drink up to 250mls of water (half a pint) on the morning of your study. Otherwise, you do not need to do anything before your arrival at the Unit.