Pharmacopoeia is a book used by the government or interested parties to help prepare good medicines. Examples of these publications are the British, Indian, and Japanese pharmacopoeias. Herbal pharmacopoeias and therapeutic compendiums are examples of therapeutic and qualitative monographs on botanicals, which describe the preparation of a single plant. A pharmacopeial monograph is a compilation of information on Active Pharmaceutical Ingredients (APP) or Products (API) that includes tests for solubility, impurity, identification, assay methodology, and impurity profiles. A document that identifies a plant medicine and offers details necessary for accurate identification is called a herbal monograph. It includes the basic description, which includes terminology, usage, components, spectrum of application, adverse effects and contraindications, interactions with other drugs, dose, application, and activity of the herb. Pharmacopoeia is a vital resource for any people or organisation involved in pharmaceutical manufacturing, testing, and research and development worldwide.