Patients who vomit after taking oseltamivir can adjust the time of taking the medicine and have a light diet. 1. Adjust the diet: during the period of taking oseltamivir, you should eat a light diet, mainly eat some millet porridge, pumpkin porridge, egg custard and other light and easy to digest food, to reduce the burden on the stomach and intestines, so that the stomach and intestines can digest and absorb the drug normally. 2. Adjust the time to take the medicine: Oseltamivir is stimulating to the stomach and intestines, patients may have nausea, vomiting and other symptoms after taking it, patients should not take it on an empty stomach, it should be taken half an hour or so after the meal and then take Oseltamivir can reduce the stimulation of the drug on the gastrointestinal mucosa, reduce the possibility of vomiting. If vomiting is severe after taking Oseltamivir, it is recommended to consult a doctor whether to stop the drug. If medication is needed, it should be taken under the guidance of a doctor, and should not be taken privately to avoid damage to the body.