Usnic acid has low solubility and has potential as a drug because of its antibiotic, antifungal, antiviral, anti-inflammatory, analgesic, antipyretic, antiproliferative, and cytotoxic effects. Development of nanocarrier delivery system with PLGA polymer and PVA stabilizer to overcome the low solubility of usnic acid. This study aims to obtain the best formula for usnic acid nanocarrier which ha…