香港現正處於 2026 年夏季流感季節(衞生防護中心於 7 月 2 日宣布踏入流感季節,預計 7 月底至 8 月達高峰)。如出現高燒、全身肌肉痛、極度疲倦等流感病徵,應及早求醫。EDD Health 提供網上問診服務,由香港註冊醫生了解您的病況並評估後,按臨床需要處方合適的抗病毒藥物。所有藥物均須經醫生診斷,不應自行購買或服用。






Influenza is caused by the influenza virus. Its symptoms are typically more severe than those of the common cold and include high fever (38°C or higher), body aches, extreme fatigue, and severe headaches. The common cold has milder symptoms, primarily a runny nose, sneezing, and a sore throat. Influenza can lead to serious complications such as pneumonia, especially in the elderly and young children.
Xofluza requires only a single dose to complete the treatment course, whereas Tamiflu must be taken twice daily for 5 consecutive days. Xofluza employs a novel mechanism of action (a cap-dependent nucleic acid endonuclease inhibitor) that reduces viral load more rapidly. Tamiflu, on the other hand, is a classic neuraminidase inhibitor with over 20 years of clinical experience and is approved for use in children aged 1 year and older.
Antiviral medications for the flu should be taken within 48 hours of the onset of symptoms; the sooner they are taken, the more effective they are. If you experience flu symptoms such as a high fever or body aches, it is recommended that you consult a doctor as soon as possible to obtain a prescription and treatment promptly.
Common side effects of Tamiflu include nausea, vomiting, and headache, which typically occur early in treatment and gradually subside. Xofluza has fewer side effects, the most common of which is diarrhea. Both drugs are generally well tolerated, and serious side effects are rare.
Tamiflu can be used to prevent the flu; take 75 mg once daily for 10 consecutive days. It is recommended for use during peak flu season or after exposure to someone with the flu. However, the most effective preventive measure is still getting an annual flu vaccine, which is recommended before the flu season begins.
Tamiflu (oseltamivir) is considered relatively safe for use during pregnancy, and multiple studies have found no adverse effects on the fetus. However, there is limited data on the safety of Xofluza in pregnant women, so it is generally not recommended for use by pregnant women. If you are pregnant and experience flu-like symptoms, please consult your doctor immediately.
Tamiflu is suitable for children aged 1 year and older, with the dosage adjusted according to body weight. Xofluza is suitable for adolescents aged 12 and older and adults. If a child develops flu symptoms, it is recommended to seek medical attention as soon as possible so that a doctor can determine whether antiviral medication is necessary.