How many days should oseltamivir be taken?

Generally, the duration of oseltamivir treatment needs to be determined based on individual differences in immunity. Individuals with stronger immune systems usually take it for 3-5 days, while those with weaker immune systems may require 5-7 days. Detailed explanations are as follows:

If someone maintains good physical health, exercises regularly, has a consistent sleep schedule, and follows a balanced diet, their immune system will likely be stronger. In such cases, the body can more quickly and effectively activate its immune defense mechanisms to fight against viruses, resulting in a faster recovery. For these individuals, symptoms may improve after taking oseltamivir for 3-5 days, and the body may be largely recovered. For example, young people who exercise regularly often recover from viral infections faster than their peers.

However, for groups such as the elderly, children, pregnant women, and individuals with chronic underlying diseases, immune system function is relatively weaker, leading to a reduced ability to combat viruses. As a result, their illness may be more severe and the course of the disease prolonged, potentially requiring 5-7 days of oseltamivir treatment for full recovery. For example, in elderly individuals, the decline in organ function and reduced activity and number of immune cells result in slower recovery after viral infection.

In daily life, it is recommended to maintain a balanced diet and engage in appropriate physical exercise to help enhance immunity.