The United States Pharmacopeia (USP) is a nonprofit scientific organization that sets standards and verifies the quality, purity, and strength of medications, dietary supplements, and food ingredients. Founded in 1820, USP is a global leader in developing standards for drug quality and therapeutic practices. USP’s standards are recognized in over 140 countries worldwide. USP’s standards are developed through a rigorous process that includes input from a wide range of stakeholders, including experts in medicine, industry, academia, and regulatory agencies. The standards cover a variety of areas, including drug identity, strength, purity, quality, and performance. USP also provides education, training, and consultation services to support the development and implementation of quality systems by pharmaceutical and food industries. USP’s impact on public health is significant. The organization’s standards have contributed to the development of safe and effective medications, including many life-saving drugs. USP also advises regulatory authorities on matters related to safety and quality of medicines and food ingredients. USP operates from its headquarters in Rockville, Maryland, and has four international offices located in Brazil, China, India, and Switzerland. USP remains committed to promoting public health by ensuring the safety and quality of medicines, food ingredients, and dietary supplements.