Oltavir 75mg Capsule contains Oseltamivir Phosphate, an antiviral medication indicated for the treatment and prevention of influenza A and B infections. Oseltamivir functions as a neuraminidase inhibitor, blocking the activity of the viral neuraminidase enzyme, thereby preventing the release of new viral particles from infected cells and limiting the spread of infection within the respiratory tract. Oltavir is prescribed to reduce the duration and severity of influenza symptoms when administered within 48 hours of symptom onset. It is also used prophylactically in individuals exposed to influenza to reduce the risk of developing the illness. The recommended dosage varies based on age, weight, and clinical indication, and should be determined by a healthcare professional. Common side effects include nausea, vomiting, headache, and abdominal discomfort, which are generally mild and transient. Patients with renal impairment may require dosage adjustments. Oltavir is contraindicated in individuals with known hypersensitivity to Oseltamivir or any component of the formulation. Caution is advised in pregnant or breastfeeding women, and use should be based on a risk-benefit assessment by a physician. This medication should be stored at room temperature, away from moisture and direct light. Always follow the prescribed regimen and consult a healthcare provider if symptoms persist or worsen.