Multiple choice general knowledge Tamiflu. Seoltamivir Oseltamivir Oseltamivries Oseltamonisicivir Reveal answer Fill a bubble to check yourself B Correct answer Explanation Oseltamivir is the correct answer. Tamiflu is the brand name for the antiviral drug oseltamivir phosphate, which is used to treat influenza A and B. Options A, C, and D are misspellings or incorrect variants of the drug name.