This page outlines the essentials of dietary supplement quality assurance, a framework that governs how products are produced, tested, and verified to meet defined standards. The term dietary supplement quality assurance focuses on verifying safety, ensuring purity, and reading accurate labels within a regulated context. It requires clear governance, documented procedures, and cross-functional collaboration across sourcing, manufacturing, quality control, and packaging. The overall aim is consistency and reliability across batches, from incoming materials to finished products. Verify safety and ensure purity: Key activities include supplier qualification, material specifications, and robust testing strategies. Identity testing confirms that each ingredient matches its approved material, while impurity limits, contaminants screening (such as metals and solvents), and microbiological controls help identify deviations early. In-process and finished-product testing, along with batch sampling and stability assessments, support reliable release decisions and enable traceability throughout the supply chain. Read accurate labels: Label accuracy is a cornerstone of quality assurance. Verify that ingredient lists, allergen statements, serving sizes, and the supplement facts panel align with regulatory requirements and with material specifications. Compare label content with verified documentation such as certificates of analysis and batch records, and ensure any label changes are properly documented. Where available, third-party verifications and transparent COAs enhance traceability and accountability for consumers and stakeholders. Best practices and governance: Implement a comprehensive dietary supplement quality assurance program based on Good Manufacturing Practices (GMPs) and, where appropriate, ISO or USP standards. Maintain supplier audits, change-control processes, deviation handling, and recall readiness. Establish lot-level traceability, robust recordkeeping, and ongoing training to sustain program effectiveness. A well-structured dietary supplement quality assurance program supports consistent quality and regulatory compliance across products.