The Yuthok Nyingthik (Tib. གཡུ་ཐོག་སྙིང་ཐིག་), the ‘Heart Essence of Yuthok’, composed by Yuthok the Younger, is a complete cycle of Vajrayana Buddhist practice, beginning with the preliminary practices (Tib. སྔོན་འགྲོ་ “ngöndro”) and progressing through the development and completion stage practices to the highest practices of Mahamudra and Dzogchen. It is characterized by its concise and simple methods which bring about both worldly benefits, including improved health and longevity, as well as the ultimate benefit of complete spiritual liberation. The Yuthok Nyingthik is the main spiritual practice of Tibetan physicians, and it contains many unique techniques to heighten the intuition and healing capacities of the doctor.