The shortest course of treatment for oseltamivir is 5 days, usually take 3 days is not allowed to stop the drug, should be under the guidance of the doctor reasonable use of medication. Oseltamivir is a common anti-influenza virus drug, including tablets or capsules for adults, and granules for children or young children. Oseltamivir is mainly used for the treatment of influenza A and influenza B, as well as for prevention. Oseltamivir treatment for influenza should normally be taken for a five-day course of treatment, and there may be adverse effects if the medication is discontinued or the dosage is increased at will. In addition, taking Oseltamivir may have nausea, vomiting, dizziness, diarrhea and other adverse reactions, patients who are allergic to this product should be prohibited from using. When taking Oseltamivir, it needs to be taken on a regimen as prescribed by the doctor. When to stop the drug need to be under the guidance of the doctor to decide according to the condition, not arbitrarily stop the drug, so as not to affect the effectiveness of the drug, aggravate the condition.