The best and safest way to do the test is on an empty stomach so you should have nothing to eat or drink, including water, for approximately six hours before the examination. If you are on some essential medications you may be able to take them with small sips of water only after consulting your specialist performing the gastroscopy.
It is very important you tell your doctor up to 5 days in advance about any medications you take; you might need to adjust your usual dose for the examination or even stop certain medications like Iron tablets or blood thinning medications like warfarin. Discuss any allergies to medications as well as medical conditions, such as heart or lung disease.
Also, alert your doctor if you require antibiotics prior to undergoing dental procedures, because you might need antibiotics prior to upper endoscopy as well.
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