The current edition of the British Pharmacopoeia comprises six volumes, which contain nearly 3,000 monographs for drug substances, excipients, and formulated preparation, together with supporting general notices, appendices (test methods, reagents etc.), and reference spectra, used in the practice of medicine, all comprehensively indexed and cross-referenced for easy reference. Items used exclusively in veterinary medicine in the UK are included in the BP (Veterinary).