| Year published | 1986 |
| Literatures (Research papers) |
Yokozawa T, Zheng PD, Mo ZL, Oura H: The effect of Onpi-to on urinary excretion of methylguanidine in rats with chronic renal failure. J Med Pharm Soc WAKAN-YAKU 3(3):198-201, 1986. |
| Kampo formulas | ompito |
| Remarks | onpito |