Although each and every Buddha can cure illness and disease, the Bhaisajya-guru Buddha of the Pure Land of the East specially vowed to eliminate pain and disease from the minds and bodies of all living things, so he is revered as the Buddha of Medicine, or the Master of Healing.
佛教的每一尊佛，其實都能醫治眾生的種種疾病或心病，只不過東方淨土的「藥師佛」，發願要消除眾生身心的病痛苦難，尤其是病苦，所以特別尊稱他為藥師佛。