The document summarizes FDA requirements for reporting adverse events related to over-the-counter drugs and dietary supplements. Serious adverse events must be reported to the FDA using a Medwatch form. A serious adverse event is defined as one that results in death, is life-threatening, requires hospitalization or extended care, causes a significant disability or birth defect. The document provides guidance on when and how to submit Medwatch forms to the FDA for different product types. It encourages voluntary reporting and notes that the FDA may also contact companies directly about adverse events.