Tamiflu, also known as oseltamivir, is a prescription antiviral drug used for treating and preventing influenza. This article dives deep into how Tamiflu works, its effectiveness in real-world scenarios, possible side effects, and when to use it. You'll also find practical tips for getting the most out of Tamiflu if you or your loved ones catch the flu. Whether you're curious about flu season prep or need to make a last-minute pharmacy run, this guide has you covered.