Direct-acting antivirals (DAAs) are medications designed to treat viral infections by directly targeting the virus's ability to replicate. They work by inhibiting specific proteins that the virus needs to multiply, effectively reducing the viral load in the body. DAAs are commonly used in the treatment of chronic hepatitis C and have significantly improved cure rates compared to older therapies. These drugs are often taken orally and can lead to fewer side effects than traditional treatments, such as interferon. DAAs have transformed the management of certain viral infections, making treatment more effective and accessible for patients worldwide.