Dictionary of Tibetan Materia Medica is a facsimile of what might have been the first Tibetan work of its kind. Originally handwritten in clear uchen script in the Indian Himalaya and published in 1991, this alphabetical dictionary documents an estimated three thousand unique ingredient names collected from the principal classical texts on medicine and pharmacognosy. Cross-referencing relatively unknown synonyms, Sanskrit-derived and other foreign terms as well as poetic and secret names to their respective main entries, it is an indispensable guide for the correct identification of the herbs, minerals, animal substances, and metals listed in traditional Tibetan medical formulas. Key quotations on their healing properties, subdivisions, and similar materia medica further increase the value of this pioneering lexical reference for practitioner-pharmacists and researchers of Sowa Rigpa's vast pharmacopoeia.