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Harvard Medical School
Medical personnel will probably watch you for half an hour or more after the test. Although you may eat an hour after the test, you shouldn't drive or drink alcohol for the rest of the day due to grogginess from the sedative. Call your doctor if you experience dizziness, chest pain, difficulty or pain with swallowing, fever, black stools, or vomiting material that looks like coffee grounds. The last two symptoms can indicate that you are bleeding from your stomach lining.