Medicine Buddha, or Bhaisajyaguru, is the Buddha who specializes in healing all the ills of human beings and other sentient beings. Diseases come in many guises, bodily, mentally and spiritually. In the Medicine Buddha Sutra, Bhaisajyaguru Buddha made a vow when he was a bodhisattva that when he achieved Buddhahood rays of many lights would come out of his body, curing all sentient beings of all their sicknesses. The mantra of Bhaisajyaguru, Om Teyatha Bekandze Bekandze Mahabekandze Raja Samudgate Soha, is the essence of Bhaisajyaguru’s meditative power and his vows. So meditating on this mantra is a really powerful way to achieve the goal of practice, for it means that our mind stream becomes one and the same as that of Bhaisajyaguru.