While treating H1N1 infection, time is of paramount importance. Ideally oseltamivir (Fluvir) should be started within 48 hours of the appearance of symptoms; delay can be dangerous. Since the patient was in contact with a confirmed case of H1N1 influenza and is suffering from typical flu-like symptoms, the doctor made the correct decision in prescribing the drug. Even if the patient is not suffering from H1N1, a full course will not have any adverse effect on immunity in future.