There is no clinical evidence of any adverse effects of stopping oseltamivir after 3 days, but it may result in failure to recover or complete prevention of the disease. Oseltamivir is usually taken for 5 to 7 days. There are no clinical studies that have shown any adverse effects of discontinuing oseltamivir after 3 days, but it may result in failure to recover or complete prevention of the disease. Oseltamivir is an antiviral medication used primarily for the treatment of influenza A and B in adults and children 1 year of age and older, and for prophylaxis in adults and adolescents 13 years of age and older. This product may cause adverse reactions such as nausea, headache, and rash. This product is not yet clearly contraindicated in the population. Use this product with caution in patients with severe hepatic insufficiency, end-stage renal disease, and in pregnant and lactating women. If you need to stop taking Oseltamivir after 3 days, you should go to the hospital in time, actively cooperate with the doctor’s treatment plan, and follow the doctor’s instructions.