A pharmacopoeia, also known as a pharmacopeia, is a reference book that contains a list of medications and their standards of preparation, use, and quality. It is a legally recognized compendium of information on pharmaceuticals, and serves as a guide for healthcare professionals, pharmacies, and regulatory agencies in the selection, preparation, and dispensing of medications.

The first pharmacopoeias were developed in the ancient world, and were used as a reference for the preparation and use of medications. Today, pharmacopoeias are published by national and international organizations, and are widely used as a reference for the quality, purity, and strength of medications.

There are several pharmacopoeias that are widely recognized and used globally, including the United States Pharmacopeia (USP), the British Pharmacopoeia (BP), and the European Pharmacopoeia (Ph. Eur.). These pharmacopoeias set standards for the quality, purity, and strength of medications, and are used as a reference for the testing and quality control of medications.

In addition to setting standards for the quality of medications, pharmacopoeias also provide information on the preparation, use, and storage of medications, as well as any potential adverse effects or interactions with other medications. They also provide information on the packaging and labeling of medications, including the required information that must be included on the label.

Pharmacopoeias are updated regularly to reflect the latest developments and advances in the field of pharmaceuticals. They are an important resource for healthcare professionals, pharmacies, and regulatory agencies, and play a crucial role in ensuring the safety and effectiveness of medications.

A pharmacopoeia is a legally-binding collection, prepared by a national or regional authority, of standards and quality specifications for medicines used in that country or region.

Some 60 pharmacopoeias (national, regional and sub-regional and international) are listed in the index compiled by WHO.

Indian Pharmacopeia

Indian Pharmacopoeia (IP) is published by the Indian Pharmacopoeia Commission (IPC) on behalf of the Ministry of Health & Family Welfare, Government of India in fulfillment of the requirements of the Drugs and Cosmetics Act, 1940 and Rules 1945 there under. IP is recognized as the official book of standards for the drugs being manufactured and/or marketed in India.IP contains a collection of authoritative procedures of analysis and specifications of drugs for their identity, purity and strength. The standards of the IP are authoritative in nature and are enforced by the regulatory authorities for ensuring the quality of drugs in India. During quality assurance and at the time of dispute in the court of law the IP standards are legally acceptable. The Standards prescribed in the IP are to establish the compliance with regulatory requirements on an article. The criteria to be adhered are: The interpretation of a monograph must be in accordance with all the general requirements, testing methods, texts and notices pertaining to it, in the IP. A product is not of standard quality unless it complies with all the requirements of the monograph.