Fluvir Capsule contains Oseltamivir Phosphate 30mg, an antiviral medication primarily used for the treatment and prevention of influenza A and B infections. It works by inhibiting the neuraminidase enzyme, which is essential for the replication and spread of the influenza virus within the respiratory tract. By blocking this enzyme, Fluvir Capsule helps to reduce the severity and duration of flu symptoms such as fever, cough, sore throat, body aches, and fatigue. It is most effective when administered within 48 hours of the onset of symptoms. Fluvir Capsule may also be prescribed as a prophylactic measure to prevent influenza in individuals who have been exposed to the virus but are not yet symptomatic. This medication is generally well-tolerated, with common side effects including nausea, vomiting, and abdominal discomfort, which are usually mild and transient. It is important to follow the prescribed dosage and complete the full course of treatment to ensure optimal efficacy and reduce the risk of resistance. Fluvir Capsule should be used under medical supervision, especially in patients with pre-existing medical conditions or those taking other medications. It is not a substitute for annual influenza vaccination but serves as an important adjunct in managing flu outbreaks.