A pharmacopoeia is an official publication that provides a comprehensive list of medicinal drugs and their formulations. It includes detailed information on the identity, quality, and strength of these substances, ensuring they meet specific standards for safety and efficacy. Pharmacopoeias serve as essential references for healthcare professionals, pharmacists, and researchers. Different countries have their own pharmacopoeias, such as the United States Pharmacopeia (USP) and the British Pharmacopoeia (BP). These documents help regulate the pharmaceutical industry by providing guidelines for the preparation, testing, and labeling of medications, thereby promoting public health and safety.