[<i>ölmei-7</i>: the Mongolian classic prescription].

<i>ölmei-7</i> is a medicinal formula in classic Mongolian medicine, renowned for its diuretic efficacy. Clinically, it is widely used in the treatment of visceral-origin edema associated with disorders of the heart, kidney, liver, and other internal organs. This study reviewed the ancient texts of Mongolian and Tibetan medicine across various historical periods with traditional philological methods, drawing on the standards of Mongolian medicine. The study examined the origin, name, composition, indications, modifications, and dosage ratios of <i>ölmei-7.</i> It was found that <i>ölmei-7</i> had been skillfully applied in clinical practice up to the 16^th century. Its basic or fixed composition was constructed with seven herbs - safflower, fragrant green orchid, scabiosa flos, Cochinchina Momordica Seed (processed), maitake, quomai, and gardenia. It was also associated with another 17 herbs as it medically evolved, such as clove, sedum, and gentiana. Clinically, <i>ölmei-7</i> can be used for internal organs alternatively according to etiology, pathogenesis, nature of disease, predilection sites, and simultaneous phenomenon of the condition of dropsy. The main medicinal flavor and dosage of <i>ölmei-7</i> is also believed relatively stable clinically. It has the value of further development and application.