25 days. According to Dr. Chun Yu's data, Bos powder has high nutritional value. Take it once every morning and evening, 5 grams each time, one day 10 gram, and half a catty equals 250 grams, which means that 250 grams can be drunk for 25 days. Bos powder is made of salvia miltiorrhiza powder, Notoginseng Radix, Radix Panacis Quinquefolii powder and Dendrobium officinale powder, and these four powders are mixed according to the ratio of1:1:1. Bao Si powder can effectively dilate coronary artery, increase coronary blood flow, reduce blood pressure and blood viscosity.