Oseltamavir PFOS Oseltamivir is an antiviral medication used to treat and prevent influenza (flu) caused by influenza A and B viruses. What does “PFOS” mean? In medication labeling, PFOS usually refers to Oseltamivir Phosphate — the phosphate salt form of oseltamivir. It improves the drug’s stability and absorption in the body. ⚠️ It is not related to the chemical pollutant PFOS (perfluorooctanesulfonic acid). In this context, it simply indicates the pharmaceutical salt form. How it works Oseltamivir is a neuraminidase inhibitor. It blocks the influenza virus enzyme neuraminidase , which prevents the virus from spreading to healthy cells. Best results occur when started: Within 48 hours of flu symptom onset. Common Uses ✔ Treatment of flu symptoms ✔ Prevention after exposure (e.g., family member with flu) ✔ Used in adults and children (dose depends on age/weight) Typical Adult Dose Treatment: 75 mg twice daily for 5 days Prevention: 75 mg once daily for 7–10 days Always follow a d...
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