Nausea and vomiting after painless gastroscopy may be able to take omeprazole, but nausea and vomiting after painless gastroscopy taking omeprazole may have adverse reactions, and should not be abused omeprazole. Painless gastroscopy is a medical examination method, painless gastroscopy will use anesthesia, some patients are sensitive to anesthesia, may have nausea, vomiting and other discomforts; this generally does not require special treatment, with the metabolism of anesthesia drugs can be relieved on their own. In addition, the process of painless gastroscopy may cause some damage to the gastric mucosa, pharyngeal mucosa, causing nausea, vomiting and other symptoms, you can take omeprazole to improve. Omeprazole can inhibit the secretion of gastric acid and protect the gastric mucosa, thus relieving the symptoms of nausea and vomiting brought about by painless gastroscopy. However, there may be adverse reactions such as headache, constipation, abdominal pain, flatulence, diarrhea, nausea and vomiting after taking omeprazole. Therefore, taking omeprazole for nausea and vomiting after painless gastroscopy is not always a solution and should not be used freely. Omeprazole should not be combined with nelfinavir and ribavirin. Nausea and vomiting after painless gastroscopy should be guided by a doctor and should not be abused with omeprazole.